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Finding the Fourth Proportional to 494.20, 741.36 and 169.60

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Solution

The fourth proportional to 494.20, 741.36 and 169.60 is: 254.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.20 : 741.36 = 169.60 : x
  2. Step 2: Convert to fraction form
    494.20/741.36 = 169.60/x
  3. Step 3: Cross multiply
    494.20x = 741.36 × 169.60
  4. Step 4: Simplify right side
    494.20x = 125,734.66
  5. Step 5: Solve for x
    x = 125,734.66/494.20
  6. Step 6: Final answer
    x = 254.42

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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.