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Finding the Fourth Proportional to 227.68, 341.57 and 81.44

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Solution

The fourth proportional to 227.68, 341.57 and 81.44 is: 122.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.68 : 341.57 = 81.44 : x
  2. Step 2: Convert to fraction form
    227.68/341.57 = 81.44/x
  3. Step 3: Cross multiply
    227.68x = 341.57 × 81.44
  4. Step 4: Simplify right side
    227.68x = 27,815.35
  5. Step 5: Solve for x
    x = 27,815.35/227.68
  6. Step 6: Final answer
    x = 122.17

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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.