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Finding the Fourth Proportional to 627.85, 942.18 and 262.63

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Solution

The fourth proportional to 627.85, 942.18 and 262.63 is: 394.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.85 : 942.18 = 262.63 : x
  2. Step 2: Convert to fraction form
    627.85/942.18 = 262.63/x
  3. Step 3: Cross multiply
    627.85x = 942.18 × 262.63
  4. Step 4: Simplify right side
    627.85x = 247,444.73
  5. Step 5: Solve for x
    x = 247,444.73/627.85
  6. Step 6: Final answer
    x = 394.11

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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.