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Finding the Fourth Proportional to 238.25, 355.90 and 169.23

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Solution

The fourth proportional to 238.25, 355.90 and 169.23 is: 252.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.25 : 355.90 = 169.23 : x
  2. Step 2: Convert to fraction form
    238.25/355.90 = 169.23/x
  3. Step 3: Cross multiply
    238.25x = 355.90 × 169.23
  4. Step 4: Simplify right side
    238.25x = 60,228.96
  5. Step 5: Solve for x
    x = 60,228.96/238.25
  6. Step 6: Final answer
    x = 252.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.