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Finding the Fourth Proportional to 724.39, 998.56 and 444.41

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Solution

The fourth proportional to 724.39, 998.56 and 444.41 is: 612.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.39 : 998.56 = 444.41 : x
  2. Step 2: Convert to fraction form
    724.39/998.56 = 444.41/x
  3. Step 3: Cross multiply
    724.39x = 998.56 × 444.41
  4. Step 4: Simplify right side
    724.39x = 443,764.91
  5. Step 5: Solve for x
    x = 443,764.91/724.39
  6. Step 6: Final answer
    x = 612.61

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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.