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Finding the Fourth Proportional to 154.32, 212.81 and 132.27

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Solution

The fourth proportional to 154.32, 212.81 and 132.27 is: 182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.32 : 212.81 = 132.27 : x
  2. Step 2: Convert to fraction form
    154.32/212.81 = 132.27/x
  3. Step 3: Cross multiply
    154.32x = 212.81 × 132.27
  4. Step 4: Simplify right side
    154.32x = 28,147.88
  5. Step 5: Solve for x
    x = 28,147.88/154.32
  6. Step 6: Final answer
    x = 182.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.