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Finding the Fourth Proportional to 627.14, 940.80 and 194.20

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Solution

The fourth proportional to 627.14, 940.80 and 194.20 is: 291.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.14 : 940.80 = 194.20 : x
  2. Step 2: Convert to fraction form
    627.14/940.80 = 194.20/x
  3. Step 3: Cross multiply
    627.14x = 940.80 × 194.20
  4. Step 4: Simplify right side
    627.14x = 182,703.36
  5. Step 5: Solve for x
    x = 182,703.36/627.14
  6. Step 6: Final answer
    x = 291.33

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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.