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Finding the Fourth Proportional to 296.20, 408.68 and 191.24

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Solution

The fourth proportional to 296.20, 408.68 and 191.24 is: 263.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.20 : 408.68 = 191.24 : x
  2. Step 2: Convert to fraction form
    296.20/408.68 = 191.24/x
  3. Step 3: Cross multiply
    296.20x = 408.68 × 191.24
  4. Step 4: Simplify right side
    296.20x = 78,155.96
  5. Step 5: Solve for x
    x = 78,155.96/296.20
  6. Step 6: Final answer
    x = 263.86

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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.