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Finding the Fourth Proportional to 194.60, 266.17 and 189.80

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Solution

The fourth proportional to 194.60, 266.17 and 189.80 is: 259.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.60 : 266.17 = 189.80 : x
  2. Step 2: Convert to fraction form
    194.60/266.17 = 189.80/x
  3. Step 3: Cross multiply
    194.60x = 266.17 × 189.80
  4. Step 4: Simplify right side
    194.60x = 50,519.07
  5. Step 5: Solve for x
    x = 50,519.07/194.60
  6. Step 6: Final answer
    x = 259.60

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.