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Finding the Fourth Proportional to 454.44, 627.12 and 255.28

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Solution

The fourth proportional to 454.44, 627.12 and 255.28 is: 352.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.44 : 627.12 = 255.28 : x
  2. Step 2: Convert to fraction form
    454.44/627.12 = 255.28/x
  3. Step 3: Cross multiply
    454.44x = 627.12 × 255.28
  4. Step 4: Simplify right side
    454.44x = 160,091.19
  5. Step 5: Solve for x
    x = 160,091.19/454.44
  6. Step 6: Final answer
    x = 352.28

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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.