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Finding the Fourth Proportional to 169.80, 255.02 and 162.15

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Solution

The fourth proportional to 169.80, 255.02 and 162.15 is: 243.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.80 : 255.02 = 162.15 : x
  2. Step 2: Convert to fraction form
    169.80/255.02 = 162.15/x
  3. Step 3: Cross multiply
    169.80x = 255.02 × 162.15
  4. Step 4: Simplify right side
    169.80x = 41,350.68
  5. Step 5: Solve for x
    x = 41,350.68/169.80
  6. Step 6: Final answer
    x = 243.53

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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.