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Finding the Fourth Proportional to 636.15, 952.94 and 404.21

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Solution

The fourth proportional to 636.15, 952.94 and 404.21 is: 605.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.15 : 952.94 = 404.21 : x
  2. Step 2: Convert to fraction form
    636.15/952.94 = 404.21/x
  3. Step 3: Cross multiply
    636.15x = 952.94 × 404.21
  4. Step 4: Simplify right side
    636.15x = 385,181.09
  5. Step 5: Solve for x
    x = 385,181.09/636.15
  6. Step 6: Final answer
    x = 605.49

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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.