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Finding the Fourth Proportional to 494.46, 741.87 and 321.03

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Solution

The fourth proportional to 494.46, 741.87 and 321.03 is: 481.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.46 : 741.87 = 321.03 : x
  2. Step 2: Convert to fraction form
    494.46/741.87 = 321.03/x
  3. Step 3: Cross multiply
    494.46x = 741.87 × 321.03
  4. Step 4: Simplify right side
    494.46x = 238,162.53
  5. Step 5: Solve for x
    x = 238,162.53/494.46
  6. Step 6: Final answer
    x = 481.66

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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.