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Finding the Fourth Proportional to 387.59, 532.17 and 332.30

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Solution

The fourth proportional to 387.59, 532.17 and 332.30 is: 456.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.59 : 532.17 = 332.30 : x
  2. Step 2: Convert to fraction form
    387.59/532.17 = 332.30/x
  3. Step 3: Cross multiply
    387.59x = 532.17 × 332.30
  4. Step 4: Simplify right side
    387.59x = 176,841.42
  5. Step 5: Solve for x
    x = 176,841.42/387.59
  6. Step 6: Final answer
    x = 456.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.