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Finding the Fourth Proportional to 144.47, 199.34 and 94.66

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Solution

The fourth proportional to 144.47, 199.34 and 94.66 is: 130.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.47 : 199.34 = 94.66 : x
  2. Step 2: Convert to fraction form
    144.47/199.34 = 94.66/x
  3. Step 3: Cross multiply
    144.47x = 199.34 × 94.66
  4. Step 4: Simplify right side
    144.47x = 18,868.05
  5. Step 5: Solve for x
    x = 18,868.05/144.47
  6. Step 6: Final answer
    x = 130.61

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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.