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Finding the Fourth Proportional to 179.40, 246.12 and 163.20

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Solution

The fourth proportional to 179.40, 246.12 and 163.20 is: 223.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.40 : 246.12 = 163.20 : x
  2. Step 2: Convert to fraction form
    179.40/246.12 = 163.20/x
  3. Step 3: Cross multiply
    179.40x = 246.12 × 163.20
  4. Step 4: Simplify right side
    179.40x = 40,166.78
  5. Step 5: Solve for x
    x = 40,166.78/179.40
  6. Step 6: Final answer
    x = 223.90

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.