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Finding the Fourth Proportional to 194.25, 268.05 and 106.92

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Solution

The fourth proportional to 194.25, 268.05 and 106.92 is: 147.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.25 : 268.05 = 106.92 : x
  2. Step 2: Convert to fraction form
    194.25/268.05 = 106.92/x
  3. Step 3: Cross multiply
    194.25x = 268.05 × 106.92
  4. Step 4: Simplify right side
    194.25x = 28,659.91
  5. Step 5: Solve for x
    x = 28,659.91/194.25
  6. Step 6: Final answer
    x = 147.54

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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.