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Finding the Fourth Proportional to 199.40, 298.67 and 196.97

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Solution

The fourth proportional to 199.40, 298.67 and 196.97 is: 295.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.40 : 298.67 = 196.97 : x
  2. Step 2: Convert to fraction form
    199.40/298.67 = 196.97/x
  3. Step 3: Cross multiply
    199.40x = 298.67 × 196.97
  4. Step 4: Simplify right side
    199.40x = 58,826.55
  5. Step 5: Solve for x
    x = 58,826.55/199.40
  6. Step 6: Final answer
    x = 295.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.