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Finding the Fourth Proportional to 184.68, 276.90 and 81.98

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Solution

The fourth proportional to 184.68, 276.90 and 81.98 is: 122.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.68 : 276.90 = 81.98 : x
  2. Step 2: Convert to fraction form
    184.68/276.90 = 81.98/x
  3. Step 3: Cross multiply
    184.68x = 276.90 × 81.98
  4. Step 4: Simplify right side
    184.68x = 22,698.88
  5. Step 5: Solve for x
    x = 22,698.88/184.68
  6. Step 6: Final answer
    x = 122.91

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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.