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Finding the Fourth Proportional to 454.82, 627.62 and 258.39

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Solution

The fourth proportional to 454.82, 627.62 and 258.39 is: 356.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.82 : 627.62 = 258.39 : x
  2. Step 2: Convert to fraction form
    454.82/627.62 = 258.39/x
  3. Step 3: Cross multiply
    454.82x = 627.62 × 258.39
  4. Step 4: Simplify right side
    454.82x = 162,169.44
  5. Step 5: Solve for x
    x = 162,169.44/454.82
  6. Step 6: Final answer
    x = 356.56

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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.