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Finding the Fourth Proportional to 723.70, 999.22 and 444.31

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Solution

The fourth proportional to 723.70, 999.22 and 444.31 is: 613.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.70 : 999.22 = 444.31 : x
  2. Step 2: Convert to fraction form
    723.70/999.22 = 444.31/x
  3. Step 3: Cross multiply
    723.70x = 999.22 × 444.31
  4. Step 4: Simplify right side
    723.70x = 443,965.35
  5. Step 5: Solve for x
    x = 443,965.35/723.70
  6. Step 6: Final answer
    x = 613.47

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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.