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Finding the Fourth Proportional to 227.60, 341.28 and 90.60

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Solution

The fourth proportional to 227.60, 341.28 and 90.60 is: 135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.60 : 341.28 = 90.60 : x
  2. Step 2: Convert to fraction form
    227.60/341.28 = 90.60/x
  3. Step 3: Cross multiply
    227.60x = 341.28 × 90.60
  4. Step 4: Simplify right side
    227.60x = 30,919.97
  5. Step 5: Solve for x
    x = 30,919.97/227.60
  6. Step 6: Final answer
    x = 135.85

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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.