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Finding the Fourth Proportional to 194.79, 290.27 and 189.22

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Solution

The fourth proportional to 194.79, 290.27 and 189.22 is: 281.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.79 : 290.27 = 189.22 : x
  2. Step 2: Convert to fraction form
    194.79/290.27 = 189.22/x
  3. Step 3: Cross multiply
    194.79x = 290.27 × 189.22
  4. Step 4: Simplify right side
    194.79x = 54,924.12
  5. Step 5: Solve for x
    x = 54,924.12/194.79
  6. Step 6: Final answer
    x = 281.97

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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.