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Finding the Fourth Proportional to 247.36, 371.19 and 144.85

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Solution

The fourth proportional to 247.36, 371.19 and 144.85 is: 217.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.36 : 371.19 = 144.85 : x
  2. Step 2: Convert to fraction form
    247.36/371.19 = 144.85/x
  3. Step 3: Cross multiply
    247.36x = 371.19 × 144.85
  4. Step 4: Simplify right side
    247.36x = 53,765.02
  5. Step 5: Solve for x
    x = 53,765.02/247.36
  6. Step 6: Final answer
    x = 217.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.