Finding the Fourth Proportional to 58.12, 87.08 and 31.03
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Solution
The fourth proportional to 58.12, 87.08 and 31.03 is: 46.50
Step by Step Solution
- Step 1: Write the proportion equation
58.12 : 87.08 = 31.03 : x - Step 2: Convert to fraction form
58.12/87.08 = 31.03/x - Step 3: Cross multiply
58.12x = 87.08 × 31.03 - Step 4: Simplify right side
58.12x = 2,702.21 - Step 5: Solve for x
x = 2,702.21/58.12 - Step 6: Final answer
x = 46.50
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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.