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Finding the Fourth Proportional to 452.43, 624.39 and 255.99

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Solution

The fourth proportional to 452.43, 624.39 and 255.99 is: 353.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.43 : 624.39 = 255.99 : x
  2. Step 2: Convert to fraction form
    452.43/624.39 = 255.99/x
  3. Step 3: Cross multiply
    452.43x = 624.39 × 255.99
  4. Step 4: Simplify right side
    452.43x = 159,837.60
  5. Step 5: Solve for x
    x = 159,837.60/452.43
  6. Step 6: Final answer
    x = 353.29

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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.