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Finding the Fourth Proportional to 371.52, 557.28 and 226.80

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Solution

The fourth proportional to 371.52, 557.28 and 226.80 is: 340.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.52 : 557.28 = 226.80 : x
  2. Step 2: Convert to fraction form
    371.52/557.28 = 226.80/x
  3. Step 3: Cross multiply
    371.52x = 557.28 × 226.80
  4. Step 4: Simplify right side
    371.52x = 126,391.10
  5. Step 5: Solve for x
    x = 126,391.10/371.52
  6. Step 6: Final answer
    x = 340.20

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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.