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Finding the Fourth Proportional to 331.28, 458.10 and 326.06

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Solution

The fourth proportional to 331.28, 458.10 and 326.06 is: 450.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.28 : 458.10 = 326.06 : x
  2. Step 2: Convert to fraction form
    331.28/458.10 = 326.06/x
  3. Step 3: Cross multiply
    331.28x = 458.10 × 326.06
  4. Step 4: Simplify right side
    331.28x = 149,368.09
  5. Step 5: Solve for x
    x = 149,368.09/331.28
  6. Step 6: Final answer
    x = 450.88

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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.