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Finding the Fourth Proportional to 724.10, 1,081.31 and 568.28

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Solution

The fourth proportional to 724.10, 1,081.31 and 568.28 is: 848.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.10 : 1,081.31 = 568.28 : x
  2. Step 2: Convert to fraction form
    724.10/1,081.31 = 568.28/x
  3. Step 3: Cross multiply
    724.10x = 1,081.31 × 568.28
  4. Step 4: Simplify right side
    724.10x = 614,480.63
  5. Step 5: Solve for x
    x = 614,480.63/724.10
  6. Step 6: Final answer
    x = 848.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.