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Finding the Fourth Proportional to 627.91, 942.06 and 262.80

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Solution

The fourth proportional to 627.91, 942.06 and 262.80 is: 394.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.91 : 942.06 = 262.80 : x
  2. Step 2: Convert to fraction form
    627.91/942.06 = 262.80/x
  3. Step 3: Cross multiply
    627.91x = 942.06 × 262.80
  4. Step 4: Simplify right side
    627.91x = 247,573.37
  5. Step 5: Solve for x
    x = 247,573.37/627.91
  6. Step 6: Final answer
    x = 394.28

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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.