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Finding the Fourth Proportional to 455.03, 627.89 and 255.82

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Solution

The fourth proportional to 455.03, 627.89 and 255.82 is: 353.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.03 : 627.89 = 255.82 : x
  2. Step 2: Convert to fraction form
    455.03/627.89 = 255.82/x
  3. Step 3: Cross multiply
    455.03x = 627.89 × 255.82
  4. Step 4: Simplify right side
    455.03x = 160,626.70
  5. Step 5: Solve for x
    x = 160,626.70/455.03
  6. Step 6: Final answer
    x = 353.00

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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.