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Finding the Fourth Proportional to 179.12, 248.35 and 169.40

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Solution

The fourth proportional to 179.12, 248.35 and 169.40 is: 234.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.12 : 248.35 = 169.40 : x
  2. Step 2: Convert to fraction form
    179.12/248.35 = 169.40/x
  3. Step 3: Cross multiply
    179.12x = 248.35 × 169.40
  4. Step 4: Simplify right side
    179.12x = 42,070.49
  5. Step 5: Solve for x
    x = 42,070.49/179.12
  6. Step 6: Final answer
    x = 234.87

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.