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Finding the Fourth Proportional to 644.00, 888.62 and 382.02

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Solution

The fourth proportional to 644.00, 888.62 and 382.02 is: 527.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.00 : 888.62 = 382.02 : x
  2. Step 2: Convert to fraction form
    644.00/888.62 = 382.02/x
  3. Step 3: Cross multiply
    644.00x = 888.62 × 382.02
  4. Step 4: Simplify right side
    644.00x = 339,467.52
  5. Step 5: Solve for x
    x = 339,467.52/644.00
  6. Step 6: Final answer
    x = 527.12

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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.