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Finding the Fourth Proportional to 494.31, 741.58 and 169.68

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Solution

The fourth proportional to 494.31, 741.58 and 169.68 is: 254.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.31 : 741.58 = 169.68 : x
  2. Step 2: Convert to fraction form
    494.31/741.58 = 169.68/x
  3. Step 3: Cross multiply
    494.31x = 741.58 × 169.68
  4. Step 4: Simplify right side
    494.31x = 125,831.29
  5. Step 5: Solve for x
    x = 125,831.29/494.31
  6. Step 6: Final answer
    x = 254.56

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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.