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Finding the Fourth Proportional to 331.07, 495.95 and 207.27

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Solution

The fourth proportional to 331.07, 495.95 and 207.27 is: 310.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.07 : 495.95 = 207.27 : x
  2. Step 2: Convert to fraction form
    331.07/495.95 = 207.27/x
  3. Step 3: Cross multiply
    331.07x = 495.95 × 207.27
  4. Step 4: Simplify right side
    331.07x = 102,794.52
  5. Step 5: Solve for x
    x = 102,794.52/331.07
  6. Step 6: Final answer
    x = 310.50

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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.