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Finding the Fourth Proportional to 184.42, 276.37 and 138.71

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Solution

The fourth proportional to 184.42, 276.37 and 138.71 is: 207.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.42 : 276.37 = 138.71 : x
  2. Step 2: Convert to fraction form
    184.42/276.37 = 138.71/x
  3. Step 3: Cross multiply
    184.42x = 276.37 × 138.71
  4. Step 4: Simplify right side
    184.42x = 38,335.28
  5. Step 5: Solve for x
    x = 38,335.28/184.42
  6. Step 6: Final answer
    x = 207.88

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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.