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Finding the Fourth Proportional to 227.86, 341.61 and 81.58

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Solution

The fourth proportional to 227.86, 341.61 and 81.58 is: 122.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.86 : 341.61 = 81.58 : x
  2. Step 2: Convert to fraction form
    227.86/341.61 = 81.58/x
  3. Step 3: Cross multiply
    227.86x = 341.61 × 81.58
  4. Step 4: Simplify right side
    227.86x = 27,868.54
  5. Step 5: Solve for x
    x = 27,868.54/227.86
  6. Step 6: Final answer
    x = 122.31

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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.