Finding the Fourth Proportional to 157.49, 217.24 and 91.99
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Solution
The fourth proportional to 157.49, 217.24 and 91.99 is: 126.89
Step by Step Solution
- Step 1: Write the proportion equation
157.49 : 217.24 = 91.99 : x - Step 2: Convert to fraction form
157.49/217.24 = 91.99/x - Step 3: Cross multiply
157.49x = 217.24 × 91.99 - Step 4: Simplify right side
157.49x = 19,983.91 - Step 5: Solve for x
x = 19,983.91/157.49 - Step 6: Final answer
x = 126.89
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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.