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Finding the Fourth Proportional to 323.70, 446.78 and 192.79

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Solution

The fourth proportional to 323.70, 446.78 and 192.79 is: 266.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.70 : 446.78 = 192.79 : x
  2. Step 2: Convert to fraction form
    323.70/446.78 = 192.79/x
  3. Step 3: Cross multiply
    323.70x = 446.78 × 192.79
  4. Step 4: Simplify right side
    323.70x = 86,134.72
  5. Step 5: Solve for x
    x = 86,134.72/323.70
  6. Step 6: Final answer
    x = 266.09

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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.