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Finding the Fourth Proportional to 198.83, 297.98 and 137.48

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Solution

The fourth proportional to 198.83, 297.98 and 137.48 is: 206.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.83 : 297.98 = 137.48 : x
  2. Step 2: Convert to fraction form
    198.83/297.98 = 137.48/x
  3. Step 3: Cross multiply
    198.83x = 297.98 × 137.48
  4. Step 4: Simplify right side
    198.83x = 40,964.11
  5. Step 5: Solve for x
    x = 40,964.11/198.83
  6. Step 6: Final answer
    x = 206.03

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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.