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Finding the Fourth Proportional to 494.54, 682.34 and 326.47

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Solution

The fourth proportional to 494.54, 682.34 and 326.47 is: 450.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.54 : 682.34 = 326.47 : x
  2. Step 2: Convert to fraction form
    494.54/682.34 = 326.47/x
  3. Step 3: Cross multiply
    494.54x = 682.34 × 326.47
  4. Step 4: Simplify right side
    494.54x = 222,763.54
  5. Step 5: Solve for x
    x = 222,763.54/494.54
  6. Step 6: Final answer
    x = 450.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.