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Finding the Fourth Proportional to 451.12, 622.56 and 254.64

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Solution

The fourth proportional to 451.12, 622.56 and 254.64 is: 351.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.12 : 622.56 = 254.64 : x
  2. Step 2: Convert to fraction form
    451.12/622.56 = 254.64/x
  3. Step 3: Cross multiply
    451.12x = 622.56 × 254.64
  4. Step 4: Simplify right side
    451.12x = 158,528.68
  5. Step 5: Solve for x
    x = 158,528.68/451.12
  6. Step 6: Final answer
    x = 351.41

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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.