Home / 198.24-296.66-121.18

Finding the Fourth Proportional to 198.24, 296.66 and 121.18

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Solution

The fourth proportional to 198.24, 296.66 and 121.18 is: 181.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.24 : 296.66 = 121.18 : x
  2. Step 2: Convert to fraction form
    198.24/296.66 = 121.18/x
  3. Step 3: Cross multiply
    198.24x = 296.66 × 121.18
  4. Step 4: Simplify right side
    198.24x = 35,949.26
  5. Step 5: Solve for x
    x = 35,949.26/198.24
  6. Step 6: Final answer
    x = 181.34

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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.