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Finding the Fourth Proportional to 951.38, 1,426.68 and 395.71

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Solution

The fourth proportional to 951.38, 1,426.68 and 395.71 is: 593.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.38 : 1,426.68 = 395.71 : x
  2. Step 2: Convert to fraction form
    951.38/1,426.68 = 395.71/x
  3. Step 3: Cross multiply
    951.38x = 1,426.68 × 395.71
  4. Step 4: Simplify right side
    951.38x = 564,551.54
  5. Step 5: Solve for x
    x = 564,551.54/951.38
  6. Step 6: Final answer
    x = 593.40

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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.