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Finding the Fourth Proportional to 624.17, 935.79 and 331.42

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Solution

The fourth proportional to 624.17, 935.79 and 331.42 is: 496.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.17 : 935.79 = 331.42 : x
  2. Step 2: Convert to fraction form
    624.17/935.79 = 331.42/x
  3. Step 3: Cross multiply
    624.17x = 935.79 × 331.42
  4. Step 4: Simplify right side
    624.17x = 310,139.52
  5. Step 5: Solve for x
    x = 310,139.52/624.17
  6. Step 6: Final answer
    x = 496.88

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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.