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Finding the Fourth Proportional to 725.04, 999.96 and 445.02

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Solution

The fourth proportional to 725.04, 999.96 and 445.02 is: 613.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    725.04 : 999.96 = 445.02 : x
  2. Step 2: Convert to fraction form
    725.04/999.96 = 445.02/x
  3. Step 3: Cross multiply
    725.04x = 999.96 × 445.02
  4. Step 4: Simplify right side
    725.04x = 445,002.20
  5. Step 5: Solve for x
    x = 445,002.20/725.04
  6. Step 6: Final answer
    x = 613.76

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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.