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Finding the Fourth Proportional to 724.33, 998.20 and 711.01

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Solution

The fourth proportional to 724.33, 998.20 and 711.01 is: 979.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.33 : 998.20 = 711.01 : x
  2. Step 2: Convert to fraction form
    724.33/998.20 = 711.01/x
  3. Step 3: Cross multiply
    724.33x = 998.20 × 711.01
  4. Step 4: Simplify right side
    724.33x = 709,726.70
  5. Step 5: Solve for x
    x = 709,726.70/724.33
  6. Step 6: Final answer
    x = 979.83

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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.