Proportion



A ratio is simply a comparison between two quantities, obtained by dividing one quantity by the other. Example: The ratio of boys to girls in the class was 4:5

Ratio Help
Rate Help
Proportion Help

proportion is a name we give to a statement that two ratios are equal.

 To be a proportion the cross products must be equal

Example:
To make 20 pancakes you have to use 2 eggs.
How many eggs are needed to make 80 pancakes?
panc
20 X = 80 2
X=160/20
X=8 
A rate is a ratio that is used to compare different kinds of quantities.
Unit rate is a ratio between 2 measurements in which the second term is 1

Unit Rates    Unit Rate    Unit Price    Proportions (unit price)

Ratio Concept

Ratios and Rates Vocabulary

Proportions

What is a Proportion

Means Extreme Property

Finding X in a Proportion 1

Finding X in a Proportion 2

Finding X in a Proportion 3

Finding X in a Proportion 4

Finding the Missing Denominator

Finding the Missing Numerator

 

 

Two variables are proportional if a change in one is always accompanied by a change in the other.

Ratios in Proportional Relationships   

The relationship between the diameter and circumference of a circle 

 

SF01       Scale_Drawing

SF02       Scale_Factor

SF03       Indirect_Measurement

SF04       Shadow

SF05       Similar Figures_Missing Side

SF06       Scale_Perimeter

SF10       Similar_Rectangles_1

SF11       Similar_Rectangles_2

SF12       Similar_Rectangles_3

SF13       Similar_Triangles 1

SF14       Similar Triangles 2

SF15       Similar_Cylinders

measureCirc

Measure the circumference and diameter of circular objects. Find the ratio of circumference to diameter for each object.

Ratio Relationship of π=C/d    

 

 

 

EQ14      Ratio Tables

PP01      Ratio_and_Proportion

PP02      Proportions 1

PP03      Proportions 2

PP04      Solving_Proportions

PP05      Proportions word problems and equations

PP06      Directly Proportional

PP07      Inversely Proportional

PP08      Percents_and_Proportions 1

PP09      Percents_and_Proportions 2

PP10      Proportions with integers 1

PP11      Proportions with integers 2

PP12      Proportions with integers 3

PP13      Proportions with integers 4

PP14      Proportions with integers 5

PP15      Proportions with integers 6

PP16      Proportions with integers 7

PP17      Proportions with integers 8

PP18      Proportions with integers 9

PP19      Proportions with integers 10

PP34      Proportions with integers 11

PP20      Find the missing number in the given proportions 1

PP21      Find the missing number in the given proportions 2

PP22      Proportions with decimals 1

PP23      Proportions with decimals 2

PP24      Proportions with decimals 3

PP25      Proportions with decimals 4

PP26      Proportions with decimals 5

PP27      Proportions with decimals 6

PP28      Proportions with decimals 7

PP29      Proportions with decimals 8

PP30      Proportions with decimals 9

PP31      Proportions with decimals 10

PP32      Proportions with Fractions 1

PP33      Proportions with Fractions 2

PP35      Find the missing number in the given proportions 3

PP36      Find the missing number in the given proportions 4

PP37      Find the missing number in the given proportions 5

PP38      Find the missing number in the given proportions 6

PP39      Find the missing number in the given proportions 7

PP40      Find the missing number in the given proportions 8

PP41      Find the missing number in the given proportions 9

PP42      Find the unknown value in the proportion

PP43      Distance – Rate – Time Word Problems.

PP50      Car_Math

PP51      RoadTrip