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Finding the Fourth Proportional to 163.90, 226.22 and 126.95

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Solution

The fourth proportional to 163.90, 226.22 and 126.95 is: 175.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.90 : 226.22 = 126.95 : x
  2. Step 2: Convert to fraction form
    163.90/226.22 = 126.95/x
  3. Step 3: Cross multiply
    163.90x = 226.22 × 126.95
  4. Step 4: Simplify right side
    163.90x = 28,716.86
  5. Step 5: Solve for x
    x = 28,716.86/163.90
  6. Step 6: Final answer
    x = 175.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.