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Finding the Fourth Proportional to 252.28, 378.22 and 225.24

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Solution

The fourth proportional to 252.28, 378.22 and 225.24 is: 337.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.28 : 378.22 = 225.24 : x
  2. Step 2: Convert to fraction form
    252.28/378.22 = 225.24/x
  3. Step 3: Cross multiply
    252.28x = 378.22 × 225.24
  4. Step 4: Simplify right side
    252.28x = 85,190.27
  5. Step 5: Solve for x
    x = 85,190.27/252.28
  6. Step 6: Final answer
    x = 337.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.