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Finding the Fourth Proportional to 151.39, 226.54 and 120.61

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Solution

The fourth proportional to 151.39, 226.54 and 120.61 is: 180.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.39 : 226.54 = 120.61 : x
  2. Step 2: Convert to fraction form
    151.39/226.54 = 120.61/x
  3. Step 3: Cross multiply
    151.39x = 226.54 × 120.61
  4. Step 4: Simplify right side
    151.39x = 27,322.99
  5. Step 5: Solve for x
    x = 27,322.99/151.39
  6. Step 6: Final answer
    x = 180.48

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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.