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Finding the Fourth Proportional to 636.14, 953.15 and 404.99

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Solution

The fourth proportional to 636.14, 953.15 and 404.99 is: 606.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.14 : 953.15 = 404.99 : x
  2. Step 2: Convert to fraction form
    636.14/953.15 = 404.99/x
  3. Step 3: Cross multiply
    636.14x = 953.15 × 404.99
  4. Step 4: Simplify right side
    636.14x = 386,016.22
  5. Step 5: Solve for x
    x = 386,016.22/636.14
  6. Step 6: Final answer
    x = 606.81

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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.