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Finding the Fourth Proportional to 454.96, 627.67 and 258.45

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Solution

The fourth proportional to 454.96, 627.67 and 258.45 is: 356.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.96 : 627.67 = 258.45 : x
  2. Step 2: Convert to fraction form
    454.96/627.67 = 258.45/x
  3. Step 3: Cross multiply
    454.96x = 627.67 × 258.45
  4. Step 4: Simplify right side
    454.96x = 162,221.31
  5. Step 5: Solve for x
    x = 162,221.31/454.96
  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.