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Finding the Fourth Proportional to 443.81, 665.09 and 327.35

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Solution

The fourth proportional to 443.81, 665.09 and 327.35 is: 490.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.81 : 665.09 = 327.35 : x
  2. Step 2: Convert to fraction form
    443.81/665.09 = 327.35/x
  3. Step 3: Cross multiply
    443.81x = 665.09 × 327.35
  4. Step 4: Simplify right side
    443.81x = 217,712.25
  5. Step 5: Solve for x
    x = 217,712.25/443.81
  6. Step 6: Final answer
    x = 490.56

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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.