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Finding the Fourth Proportional to 379.56, 523.76 and 327.18

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Solution

The fourth proportional to 379.56, 523.76 and 327.18 is: 451.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.56 : 523.76 = 327.18 : x
  2. Step 2: Convert to fraction form
    379.56/523.76 = 327.18/x
  3. Step 3: Cross multiply
    379.56x = 523.76 × 327.18
  4. Step 4: Simplify right side
    379.56x = 171,362.16
  5. Step 5: Solve for x
    x = 171,362.16/379.56
  6. Step 6: Final answer
    x = 451.48

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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.