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Finding the Fourth Proportional to 451.72, 676.30 and 337.80

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Solution

The fourth proportional to 451.72, 676.30 and 337.80 is: 505.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.72 : 676.30 = 337.80 : x
  2. Step 2: Convert to fraction form
    451.72/676.30 = 337.80/x
  3. Step 3: Cross multiply
    451.72x = 676.30 × 337.80
  4. Step 4: Simplify right side
    451.72x = 228,454.14
  5. Step 5: Solve for x
    x = 228,454.14/451.72
  6. Step 6: Final answer
    x = 505.74

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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.