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Finding the Fourth Proportional to 198.48, 297.36 and 168

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Solution

The fourth proportional to 198.48, 297.36 and 168 is: 251.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.48 : 297.36 = 168 : x
  2. Step 2: Convert to fraction form
    198.48/297.36 = 168/x
  3. Step 3: Cross multiply
    198.48x = 297.36 × 168
  4. Step 4: Simplify right side
    198.48x = 49,956.48
  5. Step 5: Solve for x
    x = 49,956.48/198.48
  6. Step 6: Final answer
    x = 251.70

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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.