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Finding the Fourth Proportional to 454.40, 627.01 and 255.19

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Solution

The fourth proportional to 454.40, 627.01 and 255.19 is: 352.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.40 : 627.01 = 255.19 : x
  2. Step 2: Convert to fraction form
    454.40/627.01 = 255.19/x
  3. Step 3: Cross multiply
    454.40x = 627.01 × 255.19
  4. Step 4: Simplify right side
    454.40x = 160,006.68
  5. Step 5: Solve for x
    x = 160,006.68/454.40
  6. Step 6: Final answer
    x = 352.13

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Double scale
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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.