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Finding the Fourth Proportional to 607.82, 911.80 and 196.88

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Solution

The fourth proportional to 607.82, 911.80 and 196.88 is: 295.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.82 : 911.80 = 196.88 : x
  2. Step 2: Convert to fraction form
    607.82/911.80 = 196.88/x
  3. Step 3: Cross multiply
    607.82x = 911.80 × 196.88
  4. Step 4: Simplify right side
    607.82x = 179,515.18
  5. Step 5: Solve for x
    x = 179,515.18/607.82
  6. Step 6: Final answer
    x = 295.34

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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.