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Finding the Fourth Proportional to 151.19, 225.47 and 136.61

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Solution

The fourth proportional to 151.19, 225.47 and 136.61 is: 203.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.19 : 225.47 = 136.61 : x
  2. Step 2: Convert to fraction form
    151.19/225.47 = 136.61/x
  3. Step 3: Cross multiply
    151.19x = 225.47 × 136.61
  4. Step 4: Simplify right side
    151.19x = 30,799.65
  5. Step 5: Solve for x
    x = 30,799.65/151.19
  6. Step 6: Final answer
    x = 203.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.