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Finding the Fourth Proportional to 484.36, 725.90 and 220.62

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Solution

The fourth proportional to 484.36, 725.90 and 220.62 is: 330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.36 : 725.90 = 220.62 : x
  2. Step 2: Convert to fraction form
    484.36/725.90 = 220.62/x
  3. Step 3: Cross multiply
    484.36x = 725.90 × 220.62
  4. Step 4: Simplify right side
    484.36x = 160,149.68
  5. Step 5: Solve for x
    x = 160,149.68/484.36
  6. Step 6: Final answer
    x = 330.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.