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Finding the Fourth Proportional to 263.75, 395.60 and 71.37

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Solution

The fourth proportional to 263.75, 395.60 and 71.37 is: 107.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.75 : 395.60 = 71.37 : x
  2. Step 2: Convert to fraction form
    263.75/395.60 = 71.37/x
  3. Step 3: Cross multiply
    263.75x = 395.60 × 71.37
  4. Step 4: Simplify right side
    263.75x = 28,233.62
  5. Step 5: Solve for x
    x = 28,233.62/263.75
  6. Step 6: Final answer
    x = 107.05

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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.