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Finding the Fourth Proportional to 260.75, 391.24 and 151.06

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Solution

The fourth proportional to 260.75, 391.24 and 151.06 is: 226.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.75 : 391.24 = 151.06 : x
  2. Step 2: Convert to fraction form
    260.75/391.24 = 151.06/x
  3. Step 3: Cross multiply
    260.75x = 391.24 × 151.06
  4. Step 4: Simplify right side
    260.75x = 59,100.71
  5. Step 5: Solve for x
    x = 59,100.71/260.75
  6. Step 6: Final answer
    x = 226.66

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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.