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Finding the Fourth Proportional to 274.86, 379.48 and 191.92

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Solution

The fourth proportional to 274.86, 379.48 and 191.92 is: 264.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.86 : 379.48 = 191.92 : x
  2. Step 2: Convert to fraction form
    274.86/379.48 = 191.92/x
  3. Step 3: Cross multiply
    274.86x = 379.48 × 191.92
  4. Step 4: Simplify right side
    274.86x = 72,829.80
  5. Step 5: Solve for x
    x = 72,829.80/274.86
  6. Step 6: Final answer
    x = 264.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.