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Finding the Fourth Proportional to 247.80, 371.52 and 181.92

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Solution

The fourth proportional to 247.80, 371.52 and 181.92 is: 272.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.80 : 371.52 = 181.92 : x
  2. Step 2: Convert to fraction form
    247.80/371.52 = 181.92/x
  3. Step 3: Cross multiply
    247.80x = 371.52 × 181.92
  4. Step 4: Simplify right side
    247.80x = 67,586.92
  5. Step 5: Solve for x
    x = 67,586.92/247.80
  6. Step 6: Final answer
    x = 272.75

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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.