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Finding the Fourth Proportional to 626.31, 939.29 and 236.36

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Solution

The fourth proportional to 626.31, 939.29 and 236.36 is: 354.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.31 : 939.29 = 236.36 : x
  2. Step 2: Convert to fraction form
    626.31/939.29 = 236.36/x
  3. Step 3: Cross multiply
    626.31x = 939.29 × 236.36
  4. Step 4: Simplify right side
    626.31x = 222,011.75
  5. Step 5: Solve for x
    x = 222,011.75/626.31
  6. Step 6: Final answer
    x = 354.48

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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.