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Finding the Fourth Proportional to 331.64, 495.22 and 270.89

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Solution

The fourth proportional to 331.64, 495.22 and 270.89 is: 404.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.64 : 495.22 = 270.89 : x
  2. Step 2: Convert to fraction form
    331.64/495.22 = 270.89/x
  3. Step 3: Cross multiply
    331.64x = 495.22 × 270.89
  4. Step 4: Simplify right side
    331.64x = 134,147.67
  5. Step 5: Solve for x
    x = 134,147.67/331.64
  6. Step 6: Final answer
    x = 404.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.