Finding the Fourth Proportional to 157.24, 216.92 and 115.70
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Solution
The fourth proportional to 157.24, 216.92 and 115.70 is: 159.61
Step by Step Solution
- Step 1: Write the proportion equation
157.24 : 216.92 = 115.70 : x - Step 2: Convert to fraction form
157.24/216.92 = 115.70/x - Step 3: Cross multiply
157.24x = 216.92 × 115.70 - Step 4: Simplify right side
157.24x = 25,097.64 - Step 5: Solve for x
x = 25,097.64/157.24 - Step 6: Final answer
x = 159.61
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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.