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Finding the Fourth Proportional to 635.19, 951.15 and 439.92

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Solution

The fourth proportional to 635.19, 951.15 and 439.92 is: 658.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.19 : 951.15 = 439.92 : x
  2. Step 2: Convert to fraction form
    635.19/951.15 = 439.92/x
  3. Step 3: Cross multiply
    635.19x = 951.15 × 439.92
  4. Step 4: Simplify right side
    635.19x = 418,429.91
  5. Step 5: Solve for x
    x = 418,429.91/635.19
  6. Step 6: Final answer
    x = 658.75

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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.