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Finding the Fourth Proportional to 479, 717.83 and 218.37

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Solution

The fourth proportional to 479, 717.83 and 218.37 is: 327.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    479 : 717.83 = 218.37 : x
  2. Step 2: Convert to fraction form
    479/717.83 = 218.37/x
  3. Step 3: Cross multiply
    479x = 717.83 × 218.37
  4. Step 4: Simplify right side
    479x = 156,752.54
  5. Step 5: Solve for x
    x = 156,752.54/479
  6. Step 6: Final answer
    x = 327.25

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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.