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Finding the Fourth Proportional to 451.11, 622.51 and 254.63

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Solution

The fourth proportional to 451.11, 622.51 and 254.63 is: 351.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.11 : 622.51 = 254.63 : x
  2. Step 2: Convert to fraction form
    451.11/622.51 = 254.63/x
  3. Step 3: Cross multiply
    451.11x = 622.51 × 254.63
  4. Step 4: Simplify right side
    451.11x = 158,505.97
  5. Step 5: Solve for x
    x = 158,505.97/451.11
  6. Step 6: Final answer
    x = 351.37

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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.