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Finding the Fourth Proportional to 650.36, 969.20 and 631.64

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Solution

The fourth proportional to 650.36, 969.20 and 631.64 is: 941.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.36 : 969.20 = 631.64 : x
  2. Step 2: Convert to fraction form
    650.36/969.20 = 631.64/x
  3. Step 3: Cross multiply
    650.36x = 969.20 × 631.64
  4. Step 4: Simplify right side
    650.36x = 612,185.49
  5. Step 5: Solve for x
    x = 612,185.49/650.36
  6. Step 6: Final answer
    x = 941.30

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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.