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Finding the Fourth Proportional to 351.62, 484.81 and 320.41

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Solution

The fourth proportional to 351.62, 484.81 and 320.41 is: 441.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.62 : 484.81 = 320.41 : x
  2. Step 2: Convert to fraction form
    351.62/484.81 = 320.41/x
  3. Step 3: Cross multiply
    351.62x = 484.81 × 320.41
  4. Step 4: Simplify right side
    351.62x = 155,337.97
  5. Step 5: Solve for x
    x = 155,337.97/351.62
  6. Step 6: Final answer
    x = 441.78

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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.