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Finding the Fourth Proportional to 636.21, 953.96 and 197.36

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Solution

The fourth proportional to 636.21, 953.96 and 197.36 is: 295.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.21 : 953.96 = 197.36 : x
  2. Step 2: Convert to fraction form
    636.21/953.96 = 197.36/x
  3. Step 3: Cross multiply
    636.21x = 953.96 × 197.36
  4. Step 4: Simplify right side
    636.21x = 188,267.79
  5. Step 5: Solve for x
    x = 188,267.79/636.21
  6. Step 6: Final answer
    x = 295.92

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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.