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Finding the Fourth Proportional to 184.39, 254.54 and 129.11

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Solution

The fourth proportional to 184.39, 254.54 and 129.11 is: 178.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.39 : 254.54 = 129.11 : x
  2. Step 2: Convert to fraction form
    184.39/254.54 = 129.11/x
  3. Step 3: Cross multiply
    184.39x = 254.54 × 129.11
  4. Step 4: Simplify right side
    184.39x = 32,863.66
  5. Step 5: Solve for x
    x = 32,863.66/184.39
  6. Step 6: Final answer
    x = 178.23

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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.