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Finding the Fourth Proportional to 260.62, 389.40 and 251.54

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Solution

The fourth proportional to 260.62, 389.40 and 251.54 is: 375.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.62 : 389.40 = 251.54 : x
  2. Step 2: Convert to fraction form
    260.62/389.40 = 251.54/x
  3. Step 3: Cross multiply
    260.62x = 389.40 × 251.54
  4. Step 4: Simplify right side
    260.62x = 97,947.86
  5. Step 5: Solve for x
    x = 97,947.86/260.62
  6. Step 6: Final answer
    x = 375.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.