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Finding the Fourth Proportional to 659.73, 910.49 and 394.41

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Solution

The fourth proportional to 659.73, 910.49 and 394.41 is: 544.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.73 : 910.49 = 394.41 : x
  2. Step 2: Convert to fraction form
    659.73/910.49 = 394.41/x
  3. Step 3: Cross multiply
    659.73x = 910.49 × 394.41
  4. Step 4: Simplify right side
    659.73x = 359,104.39
  5. Step 5: Solve for x
    x = 359,104.39/659.73
  6. Step 6: Final answer
    x = 544.32

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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.