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Finding the Fourth Proportional to 836.46, 1,252.34 and 424.73

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Solution

The fourth proportional to 836.46, 1,252.34 and 424.73 is: 635.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.46 : 1,252.34 = 424.73 : x
  2. Step 2: Convert to fraction form
    836.46/1,252.34 = 424.73/x
  3. Step 3: Cross multiply
    836.46x = 1,252.34 × 424.73
  4. Step 4: Simplify right side
    836.46x = 531,906.37
  5. Step 5: Solve for x
    x = 531,906.37/836.46
  6. Step 6: Final answer
    x = 635.90

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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.