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Finding the Fourth Proportional to 154.64, 230.58 and 132.88

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Solution

The fourth proportional to 154.64, 230.58 and 132.88 is: 198.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.64 : 230.58 = 132.88 : x
  2. Step 2: Convert to fraction form
    154.64/230.58 = 132.88/x
  3. Step 3: Cross multiply
    154.64x = 230.58 × 132.88
  4. Step 4: Simplify right side
    154.64x = 30,639.47
  5. Step 5: Solve for x
    x = 30,639.47/154.64
  6. Step 6: Final answer
    x = 198.13

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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.