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Finding the Fourth Proportional to 378.20, 522.06 and 327.52

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Solution

The fourth proportional to 378.20, 522.06 and 327.52 is: 452.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.20 : 522.06 = 327.52 : x
  2. Step 2: Convert to fraction form
    378.20/522.06 = 327.52/x
  3. Step 3: Cross multiply
    378.20x = 522.06 × 327.52
  4. Step 4: Simplify right side
    378.20x = 170,985.09
  5. Step 5: Solve for x
    x = 170,985.09/378.20
  6. Step 6: Final answer
    x = 452.10

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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.