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Finding the Fourth Proportional to 494.46, 682.67 and 308.22

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Solution

The fourth proportional to 494.46, 682.67 and 308.22 is: 425.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.46 : 682.67 = 308.22 : x
  2. Step 2: Convert to fraction form
    494.46/682.67 = 308.22/x
  3. Step 3: Cross multiply
    494.46x = 682.67 × 308.22
  4. Step 4: Simplify right side
    494.46x = 210,412.16
  5. Step 5: Solve for x
    x = 210,412.16/494.46
  6. Step 6: Final answer
    x = 425.54

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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.