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Finding the Fourth Proportional to 439.43, 606.49 and 374.22

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Solution

The fourth proportional to 439.43, 606.49 and 374.22 is: 516.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.43 : 606.49 = 374.22 : x
  2. Step 2: Convert to fraction form
    439.43/606.49 = 374.22/x
  3. Step 3: Cross multiply
    439.43x = 606.49 × 374.22
  4. Step 4: Simplify right side
    439.43x = 226,959.75
  5. Step 5: Solve for x
    x = 226,959.75/439.43
  6. Step 6: Final answer
    x = 516.49

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.