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Finding the Fourth Proportional to 154.97, 231.19 and 150.78

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Solution

The fourth proportional to 154.97, 231.19 and 150.78 is: 224.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.97 : 231.19 = 150.78 : x
  2. Step 2: Convert to fraction form
    154.97/231.19 = 150.78/x
  3. Step 3: Cross multiply
    154.97x = 231.19 × 150.78
  4. Step 4: Simplify right side
    154.97x = 34,858.45
  5. Step 5: Solve for x
    x = 34,858.45/154.97
  6. Step 6: Final answer
    x = 224.94

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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.