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Finding the Fourth Proportional to 330.05, 454.91 and 325.79

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Solution

The fourth proportional to 330.05, 454.91 and 325.79 is: 449.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.05 : 454.91 = 325.79 : x
  2. Step 2: Convert to fraction form
    330.05/454.91 = 325.79/x
  3. Step 3: Cross multiply
    330.05x = 454.91 × 325.79
  4. Step 4: Simplify right side
    330.05x = 148,201.23
  5. Step 5: Solve for x
    x = 148,201.23/330.05
  6. Step 6: Final answer
    x = 449.03

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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.