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Finding the Fourth Proportional to 451.22, 676.41 and 207.50

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Solution

The fourth proportional to 451.22, 676.41 and 207.50 is: 311.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.22 : 676.41 = 207.50 : x
  2. Step 2: Convert to fraction form
    451.22/676.41 = 207.50/x
  3. Step 3: Cross multiply
    451.22x = 676.41 × 207.50
  4. Step 4: Simplify right side
    451.22x = 140,355.08
  5. Step 5: Solve for x
    x = 140,355.08/451.22
  6. Step 6: Final answer
    x = 311.06

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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.