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Finding the Fourth Proportional to 184.28, 254.20 and 122.12

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Solution

The fourth proportional to 184.28, 254.20 and 122.12 is: 168.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.28 : 254.20 = 122.12 : x
  2. Step 2: Convert to fraction form
    184.28/254.20 = 122.12/x
  3. Step 3: Cross multiply
    184.28x = 254.20 × 122.12
  4. Step 4: Simplify right side
    184.28x = 31,042.90
  5. Step 5: Solve for x
    x = 31,042.90/184.28
  6. Step 6: Final answer
    x = 168.46

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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.