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Finding the Fourth Proportional to 151.45, 227.01 and 129.73

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Solution

The fourth proportional to 151.45, 227.01 and 129.73 is: 194.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.45 : 227.01 = 129.73 : x
  2. Step 2: Convert to fraction form
    151.45/227.01 = 129.73/x
  3. Step 3: Cross multiply
    151.45x = 227.01 × 129.73
  4. Step 4: Simplify right side
    151.45x = 29,450.01
  5. Step 5: Solve for x
    x = 29,450.01/151.45
  6. Step 6: Final answer
    x = 194.45

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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.