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Finding the Fourth Proportional to 154.53, 231.32 and 132.66

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Solution

The fourth proportional to 154.53, 231.32 and 132.66 is: 198.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.53 : 231.32 = 132.66 : x
  2. Step 2: Convert to fraction form
    154.53/231.32 = 132.66/x
  3. Step 3: Cross multiply
    154.53x = 231.32 × 132.66
  4. Step 4: Simplify right side
    154.53x = 30,687.24
  5. Step 5: Solve for x
    x = 30,687.24/154.53
  6. Step 6: Final answer
    x = 198.58

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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.