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Finding the Fourth Proportional to 627.38, 940.62 and 275.84

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Solution

The fourth proportional to 627.38, 940.62 and 275.84 is: 413.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.38 : 940.62 = 275.84 : x
  2. Step 2: Convert to fraction form
    627.38/940.62 = 275.84/x
  3. Step 3: Cross multiply
    627.38x = 940.62 × 275.84
  4. Step 4: Simplify right side
    627.38x = 259,460.62
  5. Step 5: Solve for x
    x = 259,460.62/627.38
  6. Step 6: Final answer
    x = 413.56

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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.