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Finding the Fourth Proportional to 376.38, 519.46 and 321.36

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Solution

The fourth proportional to 376.38, 519.46 and 321.36 is: 443.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.38 : 519.46 = 321.36 : x
  2. Step 2: Convert to fraction form
    376.38/519.46 = 321.36/x
  3. Step 3: Cross multiply
    376.38x = 519.46 × 321.36
  4. Step 4: Simplify right side
    376.38x = 166,933.67
  5. Step 5: Solve for x
    x = 166,933.67/376.38
  6. Step 6: Final answer
    x = 443.52

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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.