Finding the Fourth Proportional to 157.26, 216.96 and 91.76
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Solution
The fourth proportional to 157.26, 216.96 and 91.76 is: 126.59
Step by Step Solution
- Step 1: Write the proportion equation
157.26 : 216.96 = 91.76 : x - Step 2: Convert to fraction form
157.26/216.96 = 91.76/x - Step 3: Cross multiply
157.26x = 216.96 × 91.76 - Step 4: Simplify right side
157.26x = 19,908.25 - Step 5: Solve for x
x = 19,908.25/157.26 - Step 6: Final answer
x = 126.59
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.