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Finding the Fourth Proportional to 198.36, 299.04 and 166.68

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Solution

The fourth proportional to 198.36, 299.04 and 166.68 is: 251.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.36 : 299.04 = 166.68 : x
  2. Step 2: Convert to fraction form
    198.36/299.04 = 166.68/x
  3. Step 3: Cross multiply
    198.36x = 299.04 × 166.68
  4. Step 4: Simplify right side
    198.36x = 49,843.99
  5. Step 5: Solve for x
    x = 49,843.99/198.36
  6. Step 6: Final answer
    x = 251.28

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.