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Finding the Fourth Proportional to 626.82, 938.94 and 301.20

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Solution

The fourth proportional to 626.82, 938.94 and 301.20 is: 451.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.82 : 938.94 = 301.20 : x
  2. Step 2: Convert to fraction form
    626.82/938.94 = 301.20/x
  3. Step 3: Cross multiply
    626.82x = 938.94 × 301.20
  4. Step 4: Simplify right side
    626.82x = 282,808.73
  5. Step 5: Solve for x
    x = 282,808.73/626.82
  6. Step 6: Final answer
    x = 451.18

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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.