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Finding the Fourth Proportional to 723.69, 999.07 and 548.73

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Solution

The fourth proportional to 723.69, 999.07 and 548.73 is: 757.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.69 : 999.07 = 548.73 : x
  2. Step 2: Convert to fraction form
    723.69/999.07 = 548.73/x
  3. Step 3: Cross multiply
    723.69x = 999.07 × 548.73
  4. Step 4: Simplify right side
    723.69x = 548,218.31
  5. Step 5: Solve for x
    x = 548,218.31/723.69
  6. Step 6: Final answer
    x = 757.53

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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.