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Finding the Fourth Proportional to 644.37, 888.92 and 382.26

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Solution

The fourth proportional to 644.37, 888.92 and 382.26 is: 527.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.37 : 888.92 = 382.26 : x
  2. Step 2: Convert to fraction form
    644.37/888.92 = 382.26/x
  3. Step 3: Cross multiply
    644.37x = 888.92 × 382.26
  4. Step 4: Simplify right side
    644.37x = 339,796.65
  5. Step 5: Solve for x
    x = 339,796.65/644.37
  6. Step 6: Final answer
    x = 527.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.