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Finding the Fourth Proportional to 175.68, 243.69 and 169.20

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Solution

The fourth proportional to 175.68, 243.69 and 169.20 is: 234.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.68 : 243.69 = 169.20 : x
  2. Step 2: Convert to fraction form
    175.68/243.69 = 169.20/x
  3. Step 3: Cross multiply
    175.68x = 243.69 × 169.20
  4. Step 4: Simplify right side
    175.68x = 41,232.35
  5. Step 5: Solve for x
    x = 41,232.35/175.68
  6. Step 6: Final answer
    x = 234.70

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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.