Chapter 1: Ratios and Proportions

Question 1

What is a Ratio?

Answer 1

Expresses a relationship between two components.

Question 2

How are Ratios written?

Answer 2

Using a colon between the two numbers (:) ( 2:1 is different from 1:2.

Question 3

What is a Proportion?

Answer 3

A equation which states that two ratios are equal.

Question 4

How are Proportions typically set up like?

Answer 4

1:2=2:4

Question 5

What are the middle numbers 1(:2)=(2):4 called?

Answer 5

Means.

Question 6

What are the end or outside numbers (1):2=2(:4) called?

Answer 6

Extremes.

Question 7

How to determine whether proportions are equal?

Answer 7

Comparing the product (multiplication) of the means to the product of the extremes.

Question 8

What is the firs step when using the Proportion 1:2=2:4?

Answer 8

Multiply the means (2x2=4) and the extremes (1x4=4) the means and extremes are equal so the proportions are equal.