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Finding the Fourth Proportional to 263.13, 363.09 and 223.95

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Solution

The fourth proportional to 263.13, 363.09 and 223.95 is: 309.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.13 : 363.09 = 223.95 : x
  2. Step 2: Convert to fraction form
    263.13/363.09 = 223.95/x
  3. Step 3: Cross multiply
    263.13x = 363.09 × 223.95
  4. Step 4: Simplify right side
    263.13x = 81,314.01
  5. Step 5: Solve for x
    x = 81,314.01/263.13
  6. Step 6: Final answer
    x = 309.03

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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.