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Finding the Fourth Proportional to 494.63, 741.45 and 321.41

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Solution

The fourth proportional to 494.63, 741.45 and 321.41 is: 481.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.63 : 741.45 = 321.41 : x
  2. Step 2: Convert to fraction form
    494.63/741.45 = 321.41/x
  3. Step 3: Cross multiply
    494.63x = 741.45 × 321.41
  4. Step 4: Simplify right side
    494.63x = 238,309.44
  5. Step 5: Solve for x
    x = 238,309.44/494.63
  6. Step 6: Final answer
    x = 481.79

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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.