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Finding the Fourth Proportional to 184.06, 276.20 and 81.38

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Solution

The fourth proportional to 184.06, 276.20 and 81.38 is: 122.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.06 : 276.20 = 81.38 : x
  2. Step 2: Convert to fraction form
    184.06/276.20 = 81.38/x
  3. Step 3: Cross multiply
    184.06x = 276.20 × 81.38
  4. Step 4: Simplify right side
    184.06x = 22,477.16
  5. Step 5: Solve for x
    x = 22,477.16/184.06
  6. Step 6: Final answer
    x = 122.12

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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.