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Finding the Fourth Proportional to 626.84, 940.32 and 194.12

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Solution

The fourth proportional to 626.84, 940.32 and 194.12 is: 291.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.84 : 940.32 = 194.12 : x
  2. Step 2: Convert to fraction form
    626.84/940.32 = 194.12/x
  3. Step 3: Cross multiply
    626.84x = 940.32 × 194.12
  4. Step 4: Simplify right side
    626.84x = 182,534.92
  5. Step 5: Solve for x
    x = 182,534.92/626.84
  6. Step 6: Final answer
    x = 291.20

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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.