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Finding the Fourth Proportional to 184.13, 276.20 and 86.73

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Solution

The fourth proportional to 184.13, 276.20 and 86.73 is: 130.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.13 : 276.20 = 86.73 : x
  2. Step 2: Convert to fraction form
    184.13/276.20 = 86.73/x
  3. Step 3: Cross multiply
    184.13x = 276.20 × 86.73
  4. Step 4: Simplify right side
    184.13x = 23,954.83
  5. Step 5: Solve for x
    x = 23,954.83/184.13
  6. Step 6: Final answer
    x = 130.10

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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.