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Finding the Fourth Proportional to 263.75, 395.81 and 101.43

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Solution

The fourth proportional to 263.75, 395.81 and 101.43 is: 152.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.75 : 395.81 = 101.43 : x
  2. Step 2: Convert to fraction form
    263.75/395.81 = 101.43/x
  3. Step 3: Cross multiply
    263.75x = 395.81 × 101.43
  4. Step 4: Simplify right side
    263.75x = 40,146.50
  5. Step 5: Solve for x
    x = 40,146.50/263.75
  6. Step 6: Final answer
    x = 152.22

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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.