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Finding the Fourth Proportional to 331.08, 495.80 and 186.92

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Solution

The fourth proportional to 331.08, 495.80 and 186.92 is: 279.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.08 : 495.80 = 186.92 : x
  2. Step 2: Convert to fraction form
    331.08/495.80 = 186.92/x
  3. Step 3: Cross multiply
    331.08x = 495.80 × 186.92
  4. Step 4: Simplify right side
    331.08x = 92,674.94
  5. Step 5: Solve for x
    x = 92,674.94/331.08
  6. Step 6: Final answer
    x = 279.92

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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.