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Finding the Fourth Proportional to 635.44, 952.62 and 391.42

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Solution

The fourth proportional to 635.44, 952.62 and 391.42 is: 586.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.44 : 952.62 = 391.42 : x
  2. Step 2: Convert to fraction form
    635.44/952.62 = 391.42/x
  3. Step 3: Cross multiply
    635.44x = 952.62 × 391.42
  4. Step 4: Simplify right side
    635.44x = 372,874.52
  5. Step 5: Solve for x
    x = 372,874.52/635.44
  6. Step 6: Final answer
    x = 586.80

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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.