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Finding the Fourth Proportional to 247.26, 371.12 and 156.12

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Solution

The fourth proportional to 247.26, 371.12 and 156.12 is: 234.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.26 : 371.12 = 156.12 : x
  2. Step 2: Convert to fraction form
    247.26/371.12 = 156.12/x
  3. Step 3: Cross multiply
    247.26x = 371.12 × 156.12
  4. Step 4: Simplify right side
    247.26x = 57,938.47
  5. Step 5: Solve for x
    x = 57,938.47/247.26
  6. Step 6: Final answer
    x = 234.32

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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.