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Finding the Fourth Proportional to 463.92, 639.54 and 332.70

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Solution

The fourth proportional to 463.92, 639.54 and 332.70 is: 458.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.92 : 639.54 = 332.70 : x
  2. Step 2: Convert to fraction form
    463.92/639.54 = 332.70/x
  3. Step 3: Cross multiply
    463.92x = 639.54 × 332.70
  4. Step 4: Simplify right side
    463.92x = 212,774.96
  5. Step 5: Solve for x
    x = 212,774.96/463.92
  6. Step 6: Final answer
    x = 458.65

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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.