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Finding the Fourth Proportional to 497.96, 687.10 and 323.56

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Solution

The fourth proportional to 497.96, 687.10 and 323.56 is: 446.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.96 : 687.10 = 323.56 : x
  2. Step 2: Convert to fraction form
    497.96/687.10 = 323.56/x
  3. Step 3: Cross multiply
    497.96x = 687.10 × 323.56
  4. Step 4: Simplify right side
    497.96x = 222,318.08
  5. Step 5: Solve for x
    x = 222,318.08/497.96
  6. Step 6: Final answer
    x = 446.46

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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.