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Finding the Fourth Proportional to 500.92, 691.44 and 326.32

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Solution

The fourth proportional to 500.92, 691.44 and 326.32 is: 450.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.92 : 691.44 = 326.32 : x
  2. Step 2: Convert to fraction form
    500.92/691.44 = 326.32/x
  3. Step 3: Cross multiply
    500.92x = 691.44 × 326.32
  4. Step 4: Simplify right side
    500.92x = 225,630.70
  5. Step 5: Solve for x
    x = 225,630.70/500.92
  6. Step 6: Final answer
    x = 450.43

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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.