Finding the Fourth Proportional to 87.26, 130.74 and 51.08
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Solution
The fourth proportional to 87.26, 130.74 and 51.08 is: 76.53
Step by Step Solution
- Step 1: Write the proportion equation
87.26 : 130.74 = 51.08 : x - Step 2: Convert to fraction form
87.26/130.74 = 51.08/x - Step 3: Cross multiply
87.26x = 130.74 × 51.08 - Step 4: Simplify right side
87.26x = 6,678.20 - Step 5: Solve for x
x = 6,678.20/87.26 - Step 6: Final answer
x = 76.53
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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.