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Finding the Fourth Proportional to 454.49, 627.20 and 255.34

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Solution

The fourth proportional to 454.49, 627.20 and 255.34 is: 352.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.49 : 627.20 = 255.34 : x
  2. Step 2: Convert to fraction form
    454.49/627.20 = 255.34/x
  3. Step 3: Cross multiply
    454.49x = 627.20 × 255.34
  4. Step 4: Simplify right side
    454.49x = 160,149.71
  5. Step 5: Solve for x
    x = 160,149.71/454.49
  6. Step 6: Final answer
    x = 352.37

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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.