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Finding the Fourth Proportional to 327.73, 451.61 and 306.67

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Solution

The fourth proportional to 327.73, 451.61 and 306.67 is: 422.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.73 : 451.61 = 306.67 : x
  2. Step 2: Convert to fraction form
    327.73/451.61 = 306.67/x
  3. Step 3: Cross multiply
    327.73x = 451.61 × 306.67
  4. Step 4: Simplify right side
    327.73x = 138,492.98
  5. Step 5: Solve for x
    x = 138,492.98/327.73
  6. Step 6: Final answer
    x = 422.59

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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.