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Finding the Fourth Proportional to 724.01, 998.92 and 443.96

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Solution

The fourth proportional to 724.01, 998.92 and 443.96 is: 612.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.01 : 998.92 = 443.96 : x
  2. Step 2: Convert to fraction form
    724.01/998.92 = 443.96/x
  3. Step 3: Cross multiply
    724.01x = 998.92 × 443.96
  4. Step 4: Simplify right side
    724.01x = 443,480.52
  5. Step 5: Solve for x
    x = 443,480.52/724.01
  6. Step 6: Final answer
    x = 612.53

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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.