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Finding the Fourth Proportional to 451.92, 676.97 and 278.07

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Solution

The fourth proportional to 451.92, 676.97 and 278.07 is: 416.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.92 : 676.97 = 278.07 : x
  2. Step 2: Convert to fraction form
    451.92/676.97 = 278.07/x
  3. Step 3: Cross multiply
    451.92x = 676.97 × 278.07
  4. Step 4: Simplify right side
    451.92x = 188,245.05
  5. Step 5: Solve for x
    x = 188,245.05/451.92
  6. Step 6: Final answer
    x = 416.55

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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.