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Finding the Fourth Proportional to 191.97, 285.71 and 185.49

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Solution

The fourth proportional to 191.97, 285.71 and 185.49 is: 276.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.97 : 285.71 = 185.49 : x
  2. Step 2: Convert to fraction form
    191.97/285.71 = 185.49/x
  3. Step 3: Cross multiply
    191.97x = 285.71 × 185.49
  4. Step 4: Simplify right side
    191.97x = 52,995.42
  5. Step 5: Solve for x
    x = 52,995.42/191.97
  6. Step 6: Final answer
    x = 276.06

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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.