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Finding the Fourth Proportional to 260.14, 389.94 and 151.96

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Solution

The fourth proportional to 260.14, 389.94 and 151.96 is: 227.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.14 : 389.94 = 151.96 : x
  2. Step 2: Convert to fraction form
    260.14/389.94 = 151.96/x
  3. Step 3: Cross multiply
    260.14x = 389.94 × 151.96
  4. Step 4: Simplify right side
    260.14x = 59,255.28
  5. Step 5: Solve for x
    x = 59,255.28/260.14
  6. Step 6: Final answer
    x = 227.78

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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.