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Finding the Fourth Proportional to 451.73, 676.74 and 268.57

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Solution

The fourth proportional to 451.73, 676.74 and 268.57 is: 402.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.73 : 676.74 = 268.57 : x
  2. Step 2: Convert to fraction form
    451.73/676.74 = 268.57/x
  3. Step 3: Cross multiply
    451.73x = 676.74 × 268.57
  4. Step 4: Simplify right side
    451.73x = 181,750.72
  5. Step 5: Solve for x
    x = 181,750.72/451.73
  6. Step 6: Final answer
    x = 402.34

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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.