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Finding the Fourth Proportional to 626.37, 939.65 and 193.56

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Solution

The fourth proportional to 626.37, 939.65 and 193.56 is: 290.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.37 : 939.65 = 193.56 : x
  2. Step 2: Convert to fraction form
    626.37/939.65 = 193.56/x
  3. Step 3: Cross multiply
    626.37x = 939.65 × 193.56
  4. Step 4: Simplify right side
    626.37x = 181,880.76
  5. Step 5: Solve for x
    x = 181,880.76/626.37
  6. Step 6: Final answer
    x = 290.37

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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.