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Finding the Fourth Proportional to 636.02, 953.49 and 251.18

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Solution

The fourth proportional to 636.02, 953.49 and 251.18 is: 376.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.02 : 953.49 = 251.18 : x
  2. Step 2: Convert to fraction form
    636.02/953.49 = 251.18/x
  3. Step 3: Cross multiply
    636.02x = 953.49 × 251.18
  4. Step 4: Simplify right side
    636.02x = 239,497.62
  5. Step 5: Solve for x
    x = 239,497.62/636.02
  6. Step 6: Final answer
    x = 376.56

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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.