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Finding the Fourth Proportional to 627.14, 940.15 and 215.99

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Solution

The fourth proportional to 627.14, 940.15 and 215.99 is: 323.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.14 : 940.15 = 215.99 : x
  2. Step 2: Convert to fraction form
    627.14/940.15 = 215.99/x
  3. Step 3: Cross multiply
    627.14x = 940.15 × 215.99
  4. Step 4: Simplify right side
    627.14x = 203,057.22
  5. Step 5: Solve for x
    x = 203,057.22/627.14
  6. Step 6: Final answer
    x = 323.79

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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.