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Finding the Fourth Proportional to 196.48, 267.76 and 195.76

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Solution

The fourth proportional to 196.48, 267.76 and 195.76 is: 266.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.48 : 267.76 = 195.76 : x
  2. Step 2: Convert to fraction form
    196.48/267.76 = 195.76/x
  3. Step 3: Cross multiply
    196.48x = 267.76 × 195.76
  4. Step 4: Simplify right side
    196.48x = 52,416.70
  5. Step 5: Solve for x
    x = 52,416.70/196.48
  6. Step 6: Final answer
    x = 266.78

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.