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Finding the Fourth Proportional to 626.81, 940.37 and 193.95

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Solution

The fourth proportional to 626.81, 940.37 and 193.95 is: 290.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.81 : 940.37 = 193.95 : x
  2. Step 2: Convert to fraction form
    626.81/940.37 = 193.95/x
  3. Step 3: Cross multiply
    626.81x = 940.37 × 193.95
  4. Step 4: Simplify right side
    626.81x = 182,383.79
  5. Step 5: Solve for x
    x = 182,383.79/626.81
  6. Step 6: Final answer
    x = 290.97

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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.