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Finding the Fourth Proportional to 184.91, 254.94 and 122.76

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Solution

The fourth proportional to 184.91, 254.94 and 122.76 is: 169.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.91 : 254.94 = 122.76 : x
  2. Step 2: Convert to fraction form
    184.91/254.94 = 122.76/x
  3. Step 3: Cross multiply
    184.91x = 254.94 × 122.76
  4. Step 4: Simplify right side
    184.91x = 31,296.43
  5. Step 5: Solve for x
    x = 31,296.43/184.91
  6. Step 6: Final answer
    x = 169.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.