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Finding the Fourth Proportional to 415.18, 625.59 and 344.62

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Solution

The fourth proportional to 415.18, 625.59 and 344.62 is: 519.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.18 : 625.59 = 344.62 : x
  2. Step 2: Convert to fraction form
    415.18/625.59 = 344.62/x
  3. Step 3: Cross multiply
    415.18x = 625.59 × 344.62
  4. Step 4: Simplify right side
    415.18x = 215,589.10
  5. Step 5: Solve for x
    x = 215,589.10/415.18
  6. Step 6: Final answer
    x = 519.27

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.