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Finding the Fourth Proportional to 184.82, 255.18 and 129.47

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Solution

The fourth proportional to 184.82, 255.18 and 129.47 is: 178.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.82 : 255.18 = 129.47 : x
  2. Step 2: Convert to fraction form
    184.82/255.18 = 129.47/x
  3. Step 3: Cross multiply
    184.82x = 255.18 × 129.47
  4. Step 4: Simplify right side
    184.82x = 33,037.36
  5. Step 5: Solve for x
    x = 33,037.36/184.82
  6. Step 6: Final answer
    x = 178.76

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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.