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Finding the Fourth Proportional to 636.28, 949.97 and 563.56

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Solution

The fourth proportional to 636.28, 949.97 and 563.56 is: 841.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.28 : 949.97 = 563.56 : x
  2. Step 2: Convert to fraction form
    636.28/949.97 = 563.56/x
  3. Step 3: Cross multiply
    636.28x = 949.97 × 563.56
  4. Step 4: Simplify right side
    636.28x = 535,365.09
  5. Step 5: Solve for x
    x = 535,365.09/636.28
  6. Step 6: Final answer
    x = 841.40

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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.