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Finding the Fourth Proportional to 226.97, 340.17 and 129.40

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Solution

The fourth proportional to 226.97, 340.17 and 129.40 is: 193.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.97 : 340.17 = 129.40 : x
  2. Step 2: Convert to fraction form
    226.97/340.17 = 129.40/x
  3. Step 3: Cross multiply
    226.97x = 340.17 × 129.40
  4. Step 4: Simplify right side
    226.97x = 44,016.66
  5. Step 5: Solve for x
    x = 44,016.66/226.97
  6. Step 6: Final answer
    x = 193.93

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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.