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Finding the Fourth Proportional to 625.55, 937.31 and 516.20

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Solution

The fourth proportional to 625.55, 937.31 and 516.20 is: 773.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.55 : 937.31 = 516.20 : x
  2. Step 2: Convert to fraction form
    625.55/937.31 = 516.20/x
  3. Step 3: Cross multiply
    625.55x = 937.31 × 516.20
  4. Step 4: Simplify right side
    625.55x = 483,832.15
  5. Step 5: Solve for x
    x = 483,832.15/625.55
  6. Step 6: Final answer
    x = 773.46

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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.