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Finding the Fourth Proportional to 636.23, 954.39 and 203.42

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Solution

The fourth proportional to 636.23, 954.39 and 203.42 is: 305.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.23 : 954.39 = 203.42 : x
  2. Step 2: Convert to fraction form
    636.23/954.39 = 203.42/x
  3. Step 3: Cross multiply
    636.23x = 954.39 × 203.42
  4. Step 4: Simplify right side
    636.23x = 194,142.01
  5. Step 5: Solve for x
    x = 194,142.01/636.23
  6. Step 6: Final answer
    x = 305.14

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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.