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Finding the Fourth Proportional to 441.49, 661.56 and 395.59

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Solution

The fourth proportional to 441.49, 661.56 and 395.59 is: 592.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.49 : 661.56 = 395.59 : x
  2. Step 2: Convert to fraction form
    441.49/661.56 = 395.59/x
  3. Step 3: Cross multiply
    441.49x = 661.56 × 395.59
  4. Step 4: Simplify right side
    441.49x = 261,706.52
  5. Step 5: Solve for x
    x = 261,706.52/441.49
  6. Step 6: Final answer
    x = 592.78

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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.