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Finding the Fourth Proportional to 451.11, 622.33 and 353.10

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Solution

The fourth proportional to 451.11, 622.33 and 353.10 is: 487.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.11 : 622.33 = 353.10 : x
  2. Step 2: Convert to fraction form
    451.11/622.33 = 353.10/x
  3. Step 3: Cross multiply
    451.11x = 622.33 × 353.10
  4. Step 4: Simplify right side
    451.11x = 219,744.72
  5. Step 5: Solve for x
    x = 219,744.72/451.11
  6. Step 6: Final answer
    x = 487.12

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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.