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Finding the Fourth Proportional to 151.49, 226.99 and 82.85

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Solution

The fourth proportional to 151.49, 226.99 and 82.85 is: 124.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.49 : 226.99 = 82.85 : x
  2. Step 2: Convert to fraction form
    151.49/226.99 = 82.85/x
  3. Step 3: Cross multiply
    151.49x = 226.99 × 82.85
  4. Step 4: Simplify right side
    151.49x = 18,806.12
  5. Step 5: Solve for x
    x = 18,806.12/151.49
  6. Step 6: Final answer
    x = 124.14

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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.