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Finding the Fourth Proportional to 194.26, 268.11 and 161.47

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Solution

The fourth proportional to 194.26, 268.11 and 161.47 is: 222.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.26 : 268.11 = 161.47 : x
  2. Step 2: Convert to fraction form
    194.26/268.11 = 161.47/x
  3. Step 3: Cross multiply
    194.26x = 268.11 × 161.47
  4. Step 4: Simplify right side
    194.26x = 43,291.72
  5. Step 5: Solve for x
    x = 43,291.72/194.26
  6. Step 6: Final answer
    x = 222.85

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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.