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Finding the Fourth Proportional to 144.59, 199.73 and 107.66

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Solution

The fourth proportional to 144.59, 199.73 and 107.66 is: 148.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.59 : 199.73 = 107.66 : x
  2. Step 2: Convert to fraction form
    144.59/199.73 = 107.66/x
  3. Step 3: Cross multiply
    144.59x = 199.73 × 107.66
  4. Step 4: Simplify right side
    144.59x = 21,503.70
  5. Step 5: Solve for x
    x = 21,503.70/144.59
  6. Step 6: Final answer
    x = 148.73

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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.