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Finding the Fourth Proportional to 454.33, 627.24 and 288.55

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Solution

The fourth proportional to 454.33, 627.24 and 288.55 is: 398.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.33 : 627.24 = 288.55 : x
  2. Step 2: Convert to fraction form
    454.33/627.24 = 288.55/x
  3. Step 3: Cross multiply
    454.33x = 627.24 × 288.55
  4. Step 4: Simplify right side
    454.33x = 180,990.10
  5. Step 5: Solve for x
    x = 180,990.10/454.33
  6. Step 6: Final answer
    x = 398.37

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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.