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Finding the Fourth Proportional to 331.26, 458.93 and 326.58

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Solution

The fourth proportional to 331.26, 458.93 and 326.58 is: 452.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.26 : 458.93 = 326.58 : x
  2. Step 2: Convert to fraction form
    331.26/458.93 = 326.58/x
  3. Step 3: Cross multiply
    331.26x = 458.93 × 326.58
  4. Step 4: Simplify right side
    331.26x = 149,875.73
  5. Step 5: Solve for x
    x = 149,875.73/331.26
  6. Step 6: Final answer
    x = 452.44

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.