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Finding the Fourth Proportional to 454.80, 682.26 and 331.79

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Solution

The fourth proportional to 454.80, 682.26 and 331.79 is: 497.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.80 : 682.26 = 331.79 : x
  2. Step 2: Convert to fraction form
    454.80/682.26 = 331.79/x
  3. Step 3: Cross multiply
    454.80x = 682.26 × 331.79
  4. Step 4: Simplify right side
    454.80x = 226,362.39
  5. Step 5: Solve for x
    x = 226,362.39/454.80
  6. Step 6: Final answer
    x = 497.71

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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.