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Finding the Fourth Proportional to 323.79, 486.08 and 306.78

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Solution

The fourth proportional to 323.79, 486.08 and 306.78 is: 460.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.79 : 486.08 = 306.78 : x
  2. Step 2: Convert to fraction form
    323.79/486.08 = 306.78/x
  3. Step 3: Cross multiply
    323.79x = 486.08 × 306.78
  4. Step 4: Simplify right side
    323.79x = 149,119.62
  5. Step 5: Solve for x
    x = 149,119.62/323.79
  6. Step 6: Final answer
    x = 460.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.