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Finding the Fourth Proportional to 650.33, 976.37 and 639.39

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Solution

The fourth proportional to 650.33, 976.37 and 639.39 is: 959.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.33 : 976.37 = 639.39 : x
  2. Step 2: Convert to fraction form
    650.33/976.37 = 639.39/x
  3. Step 3: Cross multiply
    650.33x = 976.37 × 639.39
  4. Step 4: Simplify right side
    650.33x = 624,278.02
  5. Step 5: Solve for x
    x = 624,278.02/650.33
  6. Step 6: Final answer
    x = 959.95

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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.