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Finding the Fourth Proportional to 635.91, 953.97 and 219.42

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Solution

The fourth proportional to 635.91, 953.97 and 219.42 is: 329.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.91 : 953.97 = 219.42 : x
  2. Step 2: Convert to fraction form
    635.91/953.97 = 219.42/x
  3. Step 3: Cross multiply
    635.91x = 953.97 × 219.42
  4. Step 4: Simplify right side
    635.91x = 209,319.27
  5. Step 5: Solve for x
    x = 209,319.27/635.91
  6. Step 6: Final answer
    x = 329.17

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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.