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Finding the Fourth Proportional to 338.87, 467.57 and 198.97

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Solution

The fourth proportional to 338.87, 467.57 and 198.97 is: 274.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.87 : 467.57 = 198.97 : x
  2. Step 2: Convert to fraction form
    338.87/467.57 = 198.97/x
  3. Step 3: Cross multiply
    338.87x = 467.57 × 198.97
  4. Step 4: Simplify right side
    338.87x = 93,031.73
  5. Step 5: Solve for x
    x = 93,031.73/338.87
  6. Step 6: Final answer
    x = 274.53

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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.