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Finding the Fourth Proportional to 227.48, 313.17 and 196.79

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Solution

The fourth proportional to 227.48, 313.17 and 196.79 is: 270.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.48 : 313.17 = 196.79 : x
  2. Step 2: Convert to fraction form
    227.48/313.17 = 196.79/x
  3. Step 3: Cross multiply
    227.48x = 313.17 × 196.79
  4. Step 4: Simplify right side
    227.48x = 61,628.72
  5. Step 5: Solve for x
    x = 61,628.72/227.48
  6. Step 6: Final answer
    x = 270.92

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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.