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Finding the Fourth Proportional to 263.70, 395.88 and 161.19

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Solution

The fourth proportional to 263.70, 395.88 and 161.19 is: 241.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.70 : 395.88 = 161.19 : x
  2. Step 2: Convert to fraction form
    263.70/395.88 = 161.19/x
  3. Step 3: Cross multiply
    263.70x = 395.88 × 161.19
  4. Step 4: Simplify right side
    263.70x = 63,811.90
  5. Step 5: Solve for x
    x = 63,811.90/263.70
  6. Step 6: Final answer
    x = 241.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.