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Finding the Fourth Proportional to 635, 952.78 and 471.92

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Solution

The fourth proportional to 635, 952.78 and 471.92 is: 708.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    635 : 952.78 = 471.92 : x
  2. Step 2: Convert to fraction form
    635/952.78 = 471.92/x
  3. Step 3: Cross multiply
    635x = 952.78 × 471.92
  4. Step 4: Simplify right side
    635x = 449,635.94
  5. Step 5: Solve for x
    x = 449,635.94/635
  6. Step 6: Final answer
    x = 708.09

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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.