  PRE-ALGEBRA
ALGEBRA 1
GEOMETRY
ALGEBRA 2
TRIGONOMETRY
PRE-CALCULUS
CALCULUS    California Algebra 1, 2008 PAGE: 108 SET: Exercises PROBLEM: 1
Please look in your text book for this problem Statement  An equation stating that two ratios are equal is called a proportion.

Method 1:

Ratio of the first fraction Ratio of the second fraction  Check the ratios of fractions.

The ratios are equal. So, the ratios form a proportion. Method 2:

Write the equation According to Means-extremes Property of proportion: If , then . (Cross products) (Multiply: )

The cross products are equal. So, the ratios form a proportion. Yes, the ratios form a proportion.. TESTIMONIALS
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