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Finding the Fourth Proportional to 247.33, 371.45 and 185.68

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Solution

The fourth proportional to 247.33, 371.45 and 185.68 is: 278.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.33 : 371.45 = 185.68 : x
  2. Step 2: Convert to fraction form
    247.33/371.45 = 185.68/x
  3. Step 3: Cross multiply
    247.33x = 371.45 × 185.68
  4. Step 4: Simplify right side
    247.33x = 68,970.84
  5. Step 5: Solve for x
    x = 68,970.84/247.33
  6. Step 6: Final answer
    x = 278.86

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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.