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Finding the Fourth Proportional to 263.76, 363.91 and 153.23

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Solution

The fourth proportional to 263.76, 363.91 and 153.23 is: 211.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.76 : 363.91 = 153.23 : x
  2. Step 2: Convert to fraction form
    263.76/363.91 = 153.23/x
  3. Step 3: Cross multiply
    263.76x = 363.91 × 153.23
  4. Step 4: Simplify right side
    263.76x = 55,761.93
  5. Step 5: Solve for x
    x = 55,761.93/263.76
  6. Step 6: Final answer
    x = 211.41

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.