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Finding the Fourth Proportional to 275.83, 381.15 and 226.69

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Solution

The fourth proportional to 275.83, 381.15 and 226.69 is: 313.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.83 : 381.15 = 226.69 : x
  2. Step 2: Convert to fraction form
    275.83/381.15 = 226.69/x
  3. Step 3: Cross multiply
    275.83x = 381.15 × 226.69
  4. Step 4: Simplify right side
    275.83x = 86,402.89
  5. Step 5: Solve for x
    x = 86,402.89/275.83
  6. Step 6: Final answer
    x = 313.25

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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.