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Finding the Fourth Proportional to 198.22, 296.76 and 149.67

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Solution

The fourth proportional to 198.22, 296.76 and 149.67 is: 224.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.22 : 296.76 = 149.67 : x
  2. Step 2: Convert to fraction form
    198.22/296.76 = 149.67/x
  3. Step 3: Cross multiply
    198.22x = 296.76 × 149.67
  4. Step 4: Simplify right side
    198.22x = 44,416.07
  5. Step 5: Solve for x
    x = 44,416.07/198.22
  6. Step 6: Final answer
    x = 224.07

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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.