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Finding the Fourth Proportional to 184.37, 254.44 and 129.12

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Solution

The fourth proportional to 184.37, 254.44 and 129.12 is: 178.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.37 : 254.44 = 129.12 : x
  2. Step 2: Convert to fraction form
    184.37/254.44 = 129.12/x
  3. Step 3: Cross multiply
    184.37x = 254.44 × 129.12
  4. Step 4: Simplify right side
    184.37x = 32,853.61
  5. Step 5: Solve for x
    x = 32,853.61/184.37
  6. Step 6: Final answer
    x = 178.20

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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.