1. 5
Chapter
Chapter 2
Ratio and Proportion

2. Section
5.1
Ratios

3. Writing Ratios as Fractions
A ratio is a quotient of two quantities.
1 to 2 or or 1 : 2
Writing a Ratio as a Fraction
The order of the quantities is important when writing ratios. To write a ratio as a fraction, write the first number of the ratio as the numerator of the fraction and the second number as the denominator.
Objective A

4. Example Write the ratio 15 to 23 using fractional notation.
Objective A Continued

5. Example Write the ratio of 10.3 to 15.1 using fractional notation.
Objective A Continued

6. Example Write the ratio of $25 to $15 as a fraction in simplest form.
Objective A Continued

7. Example Write the ratio of 2.6 to 3.1 as a fraction in simplest form.
Objective A Continued

8. Example
Write the ratio of 2 2/3 to 1 13/15 as a fraction in simplest form.
Objective A Continued

9. Example Given the rectangle shown:
a. Find the ratio of its width to its length.
b. Find the ratio of its length to its perimeter. a.
b. Perimeter = = 24 feet
7 feet
5 feet
Objective A Continued