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Finding the Fourth Proportional to 626.75, 940.21 and 193.94

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Solution

The fourth proportional to 626.75, 940.21 and 193.94 is: 290.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.75 : 940.21 = 193.94 : x
  2. Step 2: Convert to fraction form
    626.75/940.21 = 193.94/x
  3. Step 3: Cross multiply
    626.75x = 940.21 × 193.94
  4. Step 4: Simplify right side
    626.75x = 182,342.46
  5. Step 5: Solve for x
    x = 182,342.46/626.75
  6. Step 6: Final answer
    x = 290.93

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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.