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Finding the Fourth Proportional to 835.27, 1,251.81 and 614.87

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Solution

The fourth proportional to 835.27, 1,251.81 and 614.87 is: 921.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.27 : 1,251.81 = 614.87 : x
  2. Step 2: Convert to fraction form
    835.27/1,251.81 = 614.87/x
  3. Step 3: Cross multiply
    835.27x = 1,251.81 × 614.87
  4. Step 4: Simplify right side
    835.27x = 769,694.16
  5. Step 5: Solve for x
    x = 769,694.16/835.27
  6. Step 6: Final answer
    x = 921.49

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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.