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Finding the Fourth Proportional to 951.17, 1,426.73 and 512.61

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Solution

The fourth proportional to 951.17, 1,426.73 and 512.61 is: 768.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.17 : 1,426.73 = 512.61 : x
  2. Step 2: Convert to fraction form
    951.17/1,426.73 = 512.61/x
  3. Step 3: Cross multiply
    951.17x = 1,426.73 × 512.61
  4. Step 4: Simplify right side
    951.17x = 731,353.50
  5. Step 5: Solve for x
    x = 731,353.50/951.17
  6. Step 6: Final answer
    x = 768.90

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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.