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Finding the Fourth Proportional to 439.15, 605.85 and 273.43

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Solution

The fourth proportional to 439.15, 605.85 and 273.43 is: 377.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.15 : 605.85 = 273.43 : x
  2. Step 2: Convert to fraction form
    439.15/605.85 = 273.43/x
  3. Step 3: Cross multiply
    439.15x = 605.85 × 273.43
  4. Step 4: Simplify right side
    439.15x = 165,657.57
  5. Step 5: Solve for x
    x = 165,657.57/439.15
  6. Step 6: Final answer
    x = 377.22

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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.