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Finding the Fourth Proportional to 179.32, 268.78 and 98.22

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Solution

The fourth proportional to 179.32, 268.78 and 98.22 is: 147.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.32 : 268.78 = 98.22 : x
  2. Step 2: Convert to fraction form
    179.32/268.78 = 98.22/x
  3. Step 3: Cross multiply
    179.32x = 268.78 × 98.22
  4. Step 4: Simplify right side
    179.32x = 26,399.57
  5. Step 5: Solve for x
    x = 26,399.57/179.32
  6. Step 6: Final answer
    x = 147.22

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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.