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Finding the Fourth Proportional to 271.22, 406.92 and 108.95

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Solution

The fourth proportional to 271.22, 406.92 and 108.95 is: 163.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.22 : 406.92 = 108.95 : x
  2. Step 2: Convert to fraction form
    271.22/406.92 = 108.95/x
  3. Step 3: Cross multiply
    271.22x = 406.92 × 108.95
  4. Step 4: Simplify right side
    271.22x = 44,333.93
  5. Step 5: Solve for x
    x = 44,333.93/271.22
  6. Step 6: Final answer
    x = 163.46

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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.