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Finding the Fourth Proportional to 439.43, 606.41 and 240.26

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Solution

The fourth proportional to 439.43, 606.41 and 240.26 is: 331.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.43 : 606.41 = 240.26 : x
  2. Step 2: Convert to fraction form
    439.43/606.41 = 240.26/x
  3. Step 3: Cross multiply
    439.43x = 606.41 × 240.26
  4. Step 4: Simplify right side
    439.43x = 145,693.95
  5. Step 5: Solve for x
    x = 145,693.95/439.43
  6. Step 6: Final answer
    x = 331.55

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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.