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Finding the Fourth Proportional to 636.66, 950.75 and 629.78

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Solution

The fourth proportional to 636.66, 950.75 and 629.78 is: 940.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.66 : 950.75 = 629.78 : x
  2. Step 2: Convert to fraction form
    636.66/950.75 = 629.78/x
  3. Step 3: Cross multiply
    636.66x = 950.75 × 629.78
  4. Step 4: Simplify right side
    636.66x = 598,763.34
  5. Step 5: Solve for x
    x = 598,763.34/636.66
  6. Step 6: Final answer
    x = 940.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.