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Finding the Fourth Proportional to 226.41, 339.67 and 129.02

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Solution

The fourth proportional to 226.41, 339.67 and 129.02 is: 193.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.41 : 339.67 = 129.02 : x
  2. Step 2: Convert to fraction form
    226.41/339.67 = 129.02/x
  3. Step 3: Cross multiply
    226.41x = 339.67 × 129.02
  4. Step 4: Simplify right side
    226.41x = 43,823.28
  5. Step 5: Solve for x
    x = 43,823.28/226.41
  6. Step 6: Final answer
    x = 193.56

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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.