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Finding the Fourth Proportional to 457.86, 631.62 and 424.92

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Solution

The fourth proportional to 457.86, 631.62 and 424.92 is: 586.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.86 : 631.62 = 424.92 : x
  2. Step 2: Convert to fraction form
    457.86/631.62 = 424.92/x
  3. Step 3: Cross multiply
    457.86x = 631.62 × 424.92
  4. Step 4: Simplify right side
    457.86x = 268,387.97
  5. Step 5: Solve for x
    x = 268,387.97/457.86
  6. Step 6: Final answer
    x = 586.18

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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.