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Finding the Fourth Proportional to 631.49, 872.31 and 534.29

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Solution

The fourth proportional to 631.49, 872.31 and 534.29 is: 738.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.49 : 872.31 = 534.29 : x
  2. Step 2: Convert to fraction form
    631.49/872.31 = 534.29/x
  3. Step 3: Cross multiply
    631.49x = 872.31 × 534.29
  4. Step 4: Simplify right side
    631.49x = 466,062.15
  5. Step 5: Solve for x
    x = 466,062.15/631.49
  6. Step 6: Final answer
    x = 738.04

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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.