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Finding the Fourth Proportional to 154.82, 231.13 and 134.44

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Solution

The fourth proportional to 154.82, 231.13 and 134.44 is: 200.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.82 : 231.13 = 134.44 : x
  2. Step 2: Convert to fraction form
    154.82/231.13 = 134.44/x
  3. Step 3: Cross multiply
    154.82x = 231.13 × 134.44
  4. Step 4: Simplify right side
    154.82x = 31,073.12
  5. Step 5: Solve for x
    x = 31,073.12/154.82
  6. Step 6: Final answer
    x = 200.70

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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.