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Finding the Fourth Proportional to 263.27, 363.45 and 208.19

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Solution

The fourth proportional to 263.27, 363.45 and 208.19 is: 287.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.27 : 363.45 = 208.19 : x
  2. Step 2: Convert to fraction form
    263.27/363.45 = 208.19/x
  3. Step 3: Cross multiply
    263.27x = 363.45 × 208.19
  4. Step 4: Simplify right side
    263.27x = 75,666.66
  5. Step 5: Solve for x
    x = 75,666.66/263.27
  6. Step 6: Final answer
    x = 287.41

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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.