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Finding the Fourth Proportional to 725.79, 999.41 and 656.33

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Solution

The fourth proportional to 725.79, 999.41 and 656.33 is: 903.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    725.79 : 999.41 = 656.33 : x
  2. Step 2: Convert to fraction form
    725.79/999.41 = 656.33/x
  3. Step 3: Cross multiply
    725.79x = 999.41 × 656.33
  4. Step 4: Simplify right side
    725.79x = 655,934.49
  5. Step 5: Solve for x
    x = 655,934.49/725.79
  6. Step 6: Final answer
    x = 903.75

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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.