Proportional Relationships

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.

Front

Define ratio.

Back

A ratio is a comparison of two quantities by division, often expressed as 'a to b' or a:b.

Front

If the ratio of cats to dogs is 2:3 and there are 60 dogs, how many cats are there?

Back

40 cats.

Front

What is the formula to find a missing value in a proportional relationship?

Back

Cross-multiply the ratios and solve for the missing value.

Front

In a proportional relationship, if one quantity increases, what happens to the other quantity?

Back

The other quantity also increases or decreases in a consistent manner.

Front

What does it mean if two ratios are equivalent?

Back

It means they represent the same relationship between quantities.

Front

If there are 28 folders and the ratio of folders to journals is 4:5, how many total materials are there?

Back

63 materials.

Front

How do you set up a proportion to solve for a missing value?

Back

Set the two ratios equal to each other and cross-multiply.

Front

What is the relationship between the quantities in a table showing proportional values?

Back

The values in the table will maintain a constant ratio.

Front

If 20 cups of flour require 16 tablespoons of honey, how many tablespoons are needed for 10 cups of flour?

Back

8 tablespoons.