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Finding the Fourth Proportional to 275.86, 379.13 and 223.31

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Solution

The fourth proportional to 275.86, 379.13 and 223.31 is: 306.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.86 : 379.13 = 223.31 : x
  2. Step 2: Convert to fraction form
    275.86/379.13 = 223.31/x
  3. Step 3: Cross multiply
    275.86x = 379.13 × 223.31
  4. Step 4: Simplify right side
    275.86x = 84,662.48
  5. Step 5: Solve for x
    x = 84,662.48/275.86
  6. Step 6: Final answer
    x = 306.91

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.