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Finding the Fourth Proportional to 454.87, 627.63 and 258.34

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Solution

The fourth proportional to 454.87, 627.63 and 258.34 is: 356.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.87 : 627.63 = 258.34 : x
  2. Step 2: Convert to fraction form
    454.87/627.63 = 258.34/x
  3. Step 3: Cross multiply
    454.87x = 627.63 × 258.34
  4. Step 4: Simplify right side
    454.87x = 162,141.93
  5. Step 5: Solve for x
    x = 162,141.93/454.87
  6. Step 6: Final answer
    x = 356.46

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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.