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Finding the Fourth Proportional to 263.48, 363.47 and 208.13

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Solution

The fourth proportional to 263.48, 363.47 and 208.13 is: 287.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.48 : 363.47 = 208.13 : x
  2. Step 2: Convert to fraction form
    263.48/363.47 = 208.13/x
  3. Step 3: Cross multiply
    263.48x = 363.47 × 208.13
  4. Step 4: Simplify right side
    263.48x = 75,646.15
  5. Step 5: Solve for x
    x = 75,646.15/263.48
  6. Step 6: Final answer
    x = 287.11

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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.