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Finding the Fourth Proportional to 154.38, 214.16 and 150.42

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Solution

The fourth proportional to 154.38, 214.16 and 150.42 is: 208.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.38 : 214.16 = 150.42 : x
  2. Step 2: Convert to fraction form
    154.38/214.16 = 150.42/x
  3. Step 3: Cross multiply
    154.38x = 214.16 × 150.42
  4. Step 4: Simplify right side
    154.38x = 32,213.20
  5. Step 5: Solve for x
    x = 32,213.20/154.38
  6. Step 6: Final answer
    x = 208.66

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.