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Finding the Fourth Proportional to 467.75, 644.39 and 327.62

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Solution

The fourth proportional to 467.75, 644.39 and 327.62 is: 451.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.75 : 644.39 = 327.62 : x
  2. Step 2: Convert to fraction form
    467.75/644.39 = 327.62/x
  3. Step 3: Cross multiply
    467.75x = 644.39 × 327.62
  4. Step 4: Simplify right side
    467.75x = 211,110.19
  5. Step 5: Solve for x
    x = 211,110.19/467.75
  6. Step 6: Final answer
    x = 451.34

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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.