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Finding the Fourth Proportional to 274.83, 379.77 and 225.69

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Solution

The fourth proportional to 274.83, 379.77 and 225.69 is: 311.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.83 : 379.77 = 225.69 : x
  2. Step 2: Convert to fraction form
    274.83/379.77 = 225.69/x
  3. Step 3: Cross multiply
    274.83x = 379.77 × 225.69
  4. Step 4: Simplify right side
    274.83x = 85,710.29
  5. Step 5: Solve for x
    x = 85,710.29/274.83
  6. Step 6: Final answer
    x = 311.87

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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.