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Finding the Fourth Proportional to 104.70, 144.39 and 82.83

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Solution

The fourth proportional to 104.70, 144.39 and 82.83 is: 114.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.70 : 144.39 = 82.83 : x
  2. Step 2: Convert to fraction form
    104.70/144.39 = 82.83/x
  3. Step 3: Cross multiply
    104.70x = 144.39 × 82.83
  4. Step 4: Simplify right side
    104.70x = 11,959.10
  5. Step 5: Solve for x
    x = 11,959.10/104.70
  6. Step 6: Final answer
    x = 114.23

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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.