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Finding the Fourth Proportional to 454.43, 623.09 and 443.49

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Solution

The fourth proportional to 454.43, 623.09 and 443.49 is: 608.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.43 : 623.09 = 443.49 : x
  2. Step 2: Convert to fraction form
    454.43/623.09 = 443.49/x
  3. Step 3: Cross multiply
    454.43x = 623.09 × 443.49
  4. Step 4: Simplify right side
    454.43x = 276,331.97
  5. Step 5: Solve for x
    x = 276,331.97/454.43
  6. Step 6: Final answer
    x = 608.09

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.