Finding the Fourth Proportional to 58.11, 87.21 and 31.08
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Solution
The fourth proportional to 58.11, 87.21 and 31.08 is: 46.64
Step by Step Solution
- Step 1: Write the proportion equation
58.11 : 87.21 = 31.08 : x - Step 2: Convert to fraction form
58.11/87.21 = 31.08/x - Step 3: Cross multiply
58.11x = 87.21 × 31.08 - Step 4: Simplify right side
58.11x = 2,710.49 - Step 5: Solve for x
x = 2,710.49/58.11 - Step 6: Final answer
x = 46.64
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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.