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Finding the Fourth Proportional to 724.13, 999.37 and 462.13

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Solution

The fourth proportional to 724.13, 999.37 and 462.13 is: 637.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.13 : 999.37 = 462.13 : x
  2. Step 2: Convert to fraction form
    724.13/999.37 = 462.13/x
  3. Step 3: Cross multiply
    724.13x = 999.37 × 462.13
  4. Step 4: Simplify right side
    724.13x = 461,838.86
  5. Step 5: Solve for x
    x = 461,838.86/724.13
  6. Step 6: Final answer
    x = 637.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.