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Finding the Fourth Proportional to 627.96, 938.22 and 606.42

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Solution

The fourth proportional to 627.96, 938.22 and 606.42 is: 906.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.96 : 938.22 = 606.42 : x
  2. Step 2: Convert to fraction form
    627.96/938.22 = 606.42/x
  3. Step 3: Cross multiply
    627.96x = 938.22 × 606.42
  4. Step 4: Simplify right side
    627.96x = 568,958.89
  5. Step 5: Solve for x
    x = 568,958.89/627.96
  6. Step 6: Final answer
    x = 906.05

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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.