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Finding the Fourth Proportional to 198.32, 298.84 and 163.04

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Solution

The fourth proportional to 198.32, 298.84 and 163.04 is: 245.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.32 : 298.84 = 163.04 : x
  2. Step 2: Convert to fraction form
    198.32/298.84 = 163.04/x
  3. Step 3: Cross multiply
    198.32x = 298.84 × 163.04
  4. Step 4: Simplify right side
    198.32x = 48,722.06
  5. Step 5: Solve for x
    x = 48,722.06/198.32
  6. Step 6: Final answer
    x = 245.67

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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.