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Finding the Fourth Proportional to 644.44, 965.80 and 351.94

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Solution

The fourth proportional to 644.44, 965.80 and 351.94 is: 527.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.44 : 965.80 = 351.94 : x
  2. Step 2: Convert to fraction form
    644.44/965.80 = 351.94/x
  3. Step 3: Cross multiply
    644.44x = 965.80 × 351.94
  4. Step 4: Simplify right side
    644.44x = 339,897.06
  5. Step 5: Solve for x
    x = 339,897.06/644.44
  6. Step 6: Final answer
    x = 527.43

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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.