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Finding the Fourth Proportional to 295.63, 408.11 and 196.20

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Solution

The fourth proportional to 295.63, 408.11 and 196.20 is: 270.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.63 : 408.11 = 196.20 : x
  2. Step 2: Convert to fraction form
    295.63/408.11 = 196.20/x
  3. Step 3: Cross multiply
    295.63x = 408.11 × 196.20
  4. Step 4: Simplify right side
    295.63x = 80,070.20
  5. Step 5: Solve for x
    x = 80,070.20/295.63
  6. Step 6: Final answer
    x = 270.85

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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.