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Chapter 10: Q17. (page 603)

Use cross products to determine whether each pair of ratios forms a proportion. Write yes or no.

34and1520

Short Answer

Expert verified

The given pair of ratios forms a proportion. So, final answer is 鈥測es鈥�.

Step by step solution

01

Step 1. Define a ratio.

The ratio of the two numbers x and y is defined as x:y=xy, where, y鈮�0.

02

Step 2. Use cross products to determine whether the pair of ratios ab and cd forms a proportion.

The pair of ratio ab andcd forms a proportion if, a.d=b.c .

03

Step 3. Use cross products to determine whether the pair of ratios 34 and 1520 forms a proportion.

Cross multiply the numbers.

3脳20=604脳15=60

Since, 60=60

Hence, the ratios 34and 1520are not in proportion.

Therefore, the given pair of ratios forms a proportion. So, final answer is 鈥測es鈥�.

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