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Finding the Fourth Proportional to 834.58, 1,251.12 and 614.66

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Solution

The fourth proportional to 834.58, 1,251.12 and 614.66 is: 921.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.58 : 1,251.12 = 614.66 : x
  2. Step 2: Convert to fraction form
    834.58/1,251.12 = 614.66/x
  3. Step 3: Cross multiply
    834.58x = 1,251.12 × 614.66
  4. Step 4: Simplify right side
    834.58x = 769,013.42
  5. Step 5: Solve for x
    x = 769,013.42/834.58
  6. Step 6: Final answer
    x = 921.44

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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.