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Finding the Fourth Proportional to 454.90, 627.71 and 258.38

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Solution

The fourth proportional to 454.90, 627.71 and 258.38 is: 356.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.90 : 627.71 = 258.38 : x
  2. Step 2: Convert to fraction form
    454.90/627.71 = 258.38/x
  3. Step 3: Cross multiply
    454.90x = 627.71 × 258.38
  4. Step 4: Simplify right side
    454.90x = 162,187.71
  5. Step 5: Solve for x
    x = 162,187.71/454.90
  6. Step 6: Final answer
    x = 356.53

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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.