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Finding the Fourth Proportional to 496.05, 684.62 and 321.69

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Solution

The fourth proportional to 496.05, 684.62 and 321.69 is: 443.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.05 : 684.62 = 321.69 : x
  2. Step 2: Convert to fraction form
    496.05/684.62 = 321.69/x
  3. Step 3: Cross multiply
    496.05x = 684.62 × 321.69
  4. Step 4: Simplify right side
    496.05x = 220,235.41
  5. Step 5: Solve for x
    x = 220,235.41/496.05
  6. Step 6: Final answer
    x = 443.98

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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.