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Finding the Fourth Proportional to 636.40, 953.99 and 203.27

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Solution

The fourth proportional to 636.40, 953.99 and 203.27 is: 304.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.40 : 953.99 = 203.27 : x
  2. Step 2: Convert to fraction form
    636.40/953.99 = 203.27/x
  3. Step 3: Cross multiply
    636.40x = 953.99 × 203.27
  4. Step 4: Simplify right side
    636.40x = 193,918.92
  5. Step 5: Solve for x
    x = 193,918.92/636.40
  6. Step 6: Final answer
    x = 304.71

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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.