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Finding the Fourth Proportional to 196.28, 270.86 and 108.96

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Solution

The fourth proportional to 196.28, 270.86 and 108.96 is: 150.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.28 : 270.86 = 108.96 : x
  2. Step 2: Convert to fraction form
    196.28/270.86 = 108.96/x
  3. Step 3: Cross multiply
    196.28x = 270.86 × 108.96
  4. Step 4: Simplify right side
    196.28x = 29,512.91
  5. Step 5: Solve for x
    x = 29,512.91/196.28
  6. Step 6: Final answer
    x = 150.36

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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.