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Finding the Fourth Proportional to 184.96, 255.26 and 122.91

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Solution

The fourth proportional to 184.96, 255.26 and 122.91 is: 169.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.96 : 255.26 = 122.91 : x
  2. Step 2: Convert to fraction form
    184.96/255.26 = 122.91/x
  3. Step 3: Cross multiply
    184.96x = 255.26 × 122.91
  4. Step 4: Simplify right side
    184.96x = 31,374.01
  5. Step 5: Solve for x
    x = 31,374.01/184.96
  6. Step 6: Final answer
    x = 169.63

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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.