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Finding the Fourth Proportional to 247.68, 371.68 and 166.56

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Solution

The fourth proportional to 247.68, 371.68 and 166.56 is: 249.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.68 : 371.68 = 166.56 : x
  2. Step 2: Convert to fraction form
    247.68/371.68 = 166.56/x
  3. Step 3: Cross multiply
    247.68x = 371.68 × 166.56
  4. Step 4: Simplify right side
    247.68x = 61,907.02
  5. Step 5: Solve for x
    x = 61,907.02/247.68
  6. Step 6: Final answer
    x = 249.95

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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.