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Finding the Fourth Proportional to 650.88, 969.28 and 622.80

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Solution

The fourth proportional to 650.88, 969.28 and 622.80 is: 927.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.88 : 969.28 = 622.80 : x
  2. Step 2: Convert to fraction form
    650.88/969.28 = 622.80/x
  3. Step 3: Cross multiply
    650.88x = 969.28 × 622.80
  4. Step 4: Simplify right side
    650.88x = 603,667.58
  5. Step 5: Solve for x
    x = 603,667.58/650.88
  6. Step 6: Final answer
    x = 927.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.