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Finding the Fourth Proportional to 194.55, 291.90 and 191.48

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Solution

The fourth proportional to 194.55, 291.90 and 191.48 is: 287.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.55 : 291.90 = 191.48 : x
  2. Step 2: Convert to fraction form
    194.55/291.90 = 191.48/x
  3. Step 3: Cross multiply
    194.55x = 291.90 × 191.48
  4. Step 4: Simplify right side
    194.55x = 55,891.55
  5. Step 5: Solve for x
    x = 55,891.55/194.55
  6. Step 6: Final answer
    x = 287.29

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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.