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Finding the Fourth Proportional to 1,033.64, 1,426.42 and 614.28

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Solution

The fourth proportional to 1,033.64, 1,426.42 and 614.28 is: 847.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,033.64 : 1,426.42 = 614.28 : x
  2. Step 2: Convert to fraction form
    1,033.64/1,426.42 = 614.28/x
  3. Step 3: Cross multiply
    1,033.64x = 1,426.42 × 614.28
  4. Step 4: Simplify right side
    1,033.64x = 876,221.28
  5. Step 5: Solve for x
    x = 876,221.28/1,033.64
  6. Step 6: Final answer
    x = 847.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.