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Finding the Fourth Proportional to 263.92, 363.16 and 256.75

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Solution

The fourth proportional to 263.92, 363.16 and 256.75 is: 353.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.92 : 363.16 = 256.75 : x
  2. Step 2: Convert to fraction form
    263.92/363.16 = 256.75/x
  3. Step 3: Cross multiply
    263.92x = 363.16 × 256.75
  4. Step 4: Simplify right side
    263.92x = 93,241.33
  5. Step 5: Solve for x
    x = 93,241.33/263.92
  6. Step 6: Final answer
    x = 353.29

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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.