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Finding the Fourth Proportional to 439.15, 606.31 and 273.61

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Solution

The fourth proportional to 439.15, 606.31 and 273.61 is: 377.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.15 : 606.31 = 273.61 : x
  2. Step 2: Convert to fraction form
    439.15/606.31 = 273.61/x
  3. Step 3: Cross multiply
    439.15x = 606.31 × 273.61
  4. Step 4: Simplify right side
    439.15x = 165,892.48
  5. Step 5: Solve for x
    x = 165,892.48/439.15
  6. Step 6: Final answer
    x = 377.76

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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.