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Finding the Fourth Proportional to 194.60, 289.76 and 178.26

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Solution

The fourth proportional to 194.60, 289.76 and 178.26 is: 265.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.60 : 289.76 = 178.26 : x
  2. Step 2: Convert to fraction form
    194.60/289.76 = 178.26/x
  3. Step 3: Cross multiply
    194.60x = 289.76 × 178.26
  4. Step 4: Simplify right side
    194.60x = 51,651.73
  5. Step 5: Solve for x
    x = 51,651.73/194.60
  6. Step 6: Final answer
    x = 265.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.