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Finding the Fourth Proportional to 439.73, 606.57 and 284.48

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Solution

The fourth proportional to 439.73, 606.57 and 284.48 is: 392.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.73 : 606.57 = 284.48 : x
  2. Step 2: Convert to fraction form
    439.73/606.57 = 284.48/x
  3. Step 3: Cross multiply
    439.73x = 606.57 × 284.48
  4. Step 4: Simplify right side
    439.73x = 172,557.03
  5. Step 5: Solve for x
    x = 172,557.03/439.73
  6. Step 6: Final answer
    x = 392.42

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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.