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Finding the Fourth Proportional to 452.05, 619.48 and 408.31

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Solution

The fourth proportional to 452.05, 619.48 and 408.31 is: 559.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.05 : 619.48 = 408.31 : x
  2. Step 2: Convert to fraction form
    452.05/619.48 = 408.31/x
  3. Step 3: Cross multiply
    452.05x = 619.48 × 408.31
  4. Step 4: Simplify right side
    452.05x = 252,938.84
  5. Step 5: Solve for x
    x = 252,938.84/452.05
  6. Step 6: Final answer
    x = 559.54

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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.