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Finding the Fourth Proportional to 151.79, 225.76 and 149.90

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Solution

The fourth proportional to 151.79, 225.76 and 149.90 is: 222.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.79 : 225.76 = 149.90 : x
  2. Step 2: Convert to fraction form
    151.79/225.76 = 149.90/x
  3. Step 3: Cross multiply
    151.79x = 225.76 × 149.90
  4. Step 4: Simplify right side
    151.79x = 33,841.42
  5. Step 5: Solve for x
    x = 33,841.42/151.79
  6. Step 6: Final answer
    x = 222.95

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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.