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Finding the Fourth Proportional to 331.06, 452.03 and 326.20

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Solution

The fourth proportional to 331.06, 452.03 and 326.20 is: 445.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.06 : 452.03 = 326.20 : x
  2. Step 2: Convert to fraction form
    331.06/452.03 = 326.20/x
  3. Step 3: Cross multiply
    331.06x = 452.03 × 326.20
  4. Step 4: Simplify right side
    331.06x = 147,452.19
  5. Step 5: Solve for x
    x = 147,452.19/331.06
  6. Step 6: Final answer
    x = 445.39

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.