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Finding the Fourth Proportional to 624.28, 935.88 and 432.04

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Solution

The fourth proportional to 624.28, 935.88 and 432.04 is: 647.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.28 : 935.88 = 432.04 : x
  2. Step 2: Convert to fraction form
    624.28/935.88 = 432.04/x
  3. Step 3: Cross multiply
    624.28x = 935.88 × 432.04
  4. Step 4: Simplify right side
    624.28x = 404,337.60
  5. Step 5: Solve for x
    x = 404,337.60/624.28
  6. Step 6: Final answer
    x = 647.69

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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.