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Finding the Fourth Proportional to 247.52, 371.25 and 144.65

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Solution

The fourth proportional to 247.52, 371.25 and 144.65 is: 216.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.52 : 371.25 = 144.65 : x
  2. Step 2: Convert to fraction form
    247.52/371.25 = 144.65/x
  3. Step 3: Cross multiply
    247.52x = 371.25 × 144.65
  4. Step 4: Simplify right side
    247.52x = 53,702.24
  5. Step 5: Solve for x
    x = 53,702.24/247.52
  6. Step 6: Final answer
    x = 216.96

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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.