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Finding the Fourth Proportional to 625.38, 940.09 and 580.29

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Solution

The fourth proportional to 625.38, 940.09 and 580.29 is: 872.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.38 : 940.09 = 580.29 : x
  2. Step 2: Convert to fraction form
    625.38/940.09 = 580.29/x
  3. Step 3: Cross multiply
    625.38x = 940.09 × 580.29
  4. Step 4: Simplify right side
    625.38x = 545,524.83
  5. Step 5: Solve for x
    x = 545,524.83/625.38
  6. Step 6: Final answer
    x = 872.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.