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Finding the Fourth Proportional to 940.43, 1,295.69 and 625.14

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Solution

The fourth proportional to 940.43, 1,295.69 and 625.14 is: 861.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.43 : 1,295.69 = 625.14 : x
  2. Step 2: Convert to fraction form
    940.43/1,295.69 = 625.14/x
  3. Step 3: Cross multiply
    940.43x = 1,295.69 × 625.14
  4. Step 4: Simplify right side
    940.43x = 809,984.52
  5. Step 5: Solve for x
    x = 809,984.52/940.43
  6. Step 6: Final answer
    x = 861.29

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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.