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Finding the Fourth Proportional to 263.45, 394.94 and 101.09

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Solution

The fourth proportional to 263.45, 394.94 and 101.09 is: 151.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.45 : 394.94 = 101.09 : x
  2. Step 2: Convert to fraction form
    263.45/394.94 = 101.09/x
  3. Step 3: Cross multiply
    263.45x = 394.94 × 101.09
  4. Step 4: Simplify right side
    263.45x = 39,923.98
  5. Step 5: Solve for x
    x = 39,923.98/263.45
  6. Step 6: Final answer
    x = 151.54

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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.