Finding the Fourth Proportional to 118.26, 176.97 and 87.75
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Solution
The fourth proportional to 118.26, 176.97 and 87.75 is: 131.31
Step by Step Solution
- Step 1: Write the proportion equation
118.26 : 176.97 = 87.75 : x - Step 2: Convert to fraction form
118.26/176.97 = 87.75/x - Step 3: Cross multiply
118.26x = 176.97 × 87.75 - Step 4: Simplify right side
118.26x = 15,529.12 - Step 5: Solve for x
x = 15,529.12/118.26 - Step 6: Final answer
x = 131.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.