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Finding the Fourth Proportional to 626.19, 939.42 and 193.38

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Solution

The fourth proportional to 626.19, 939.42 and 193.38 is: 290.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.19 : 939.42 = 193.38 : x
  2. Step 2: Convert to fraction form
    626.19/939.42 = 193.38/x
  3. Step 3: Cross multiply
    626.19x = 939.42 × 193.38
  4. Step 4: Simplify right side
    626.19x = 181,665.04
  5. Step 5: Solve for x
    x = 181,665.04/626.19
  6. Step 6: Final answer
    x = 290.11

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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.