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Finding the Fourth Proportional to 450.75, 622.38 and 352.78

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Solution

The fourth proportional to 450.75, 622.38 and 352.78 is: 487.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.75 : 622.38 = 352.78 : x
  2. Step 2: Convert to fraction form
    450.75/622.38 = 352.78/x
  3. Step 3: Cross multiply
    450.75x = 622.38 × 352.78
  4. Step 4: Simplify right side
    450.75x = 219,563.22
  5. Step 5: Solve for x
    x = 219,563.22/450.75
  6. Step 6: Final answer
    x = 487.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.