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Finding the Fourth Proportional to 184.65, 254.92 and 122.56

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Solution

The fourth proportional to 184.65, 254.92 and 122.56 is: 169.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.65 : 254.92 = 122.56 : x
  2. Step 2: Convert to fraction form
    184.65/254.92 = 122.56/x
  3. Step 3: Cross multiply
    184.65x = 254.92 × 122.56
  4. Step 4: Simplify right side
    184.65x = 31,244.06
  5. Step 5: Solve for x
    x = 31,244.06/184.65
  6. Step 6: Final answer
    x = 169.21

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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.