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Finding the Fourth Proportional to 732.57, 1,008.81 and 511.13

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Solution

The fourth proportional to 732.57, 1,008.81 and 511.13 is: 703.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.57 : 1,008.81 = 511.13 : x
  2. Step 2: Convert to fraction form
    732.57/1,008.81 = 511.13/x
  3. Step 3: Cross multiply
    732.57x = 1,008.81 × 511.13
  4. Step 4: Simplify right side
    732.57x = 515,637.49
  5. Step 5: Solve for x
    x = 515,637.49/732.57
  6. Step 6: Final answer
    x = 703.88

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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.