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Finding the Fourth Proportional to 450.21, 676.34 and 320.52

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Solution

The fourth proportional to 450.21, 676.34 and 320.52 is: 481.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.21 : 676.34 = 320.52 : x
  2. Step 2: Convert to fraction form
    450.21/676.34 = 320.52/x
  3. Step 3: Cross multiply
    450.21x = 676.34 × 320.52
  4. Step 4: Simplify right side
    450.21x = 216,780.50
  5. Step 5: Solve for x
    x = 216,780.50/450.21
  6. Step 6: Final answer
    x = 481.51

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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.