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Finding the Fourth Proportional to 441.70, 609.66 and 255.28

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Solution

The fourth proportional to 441.70, 609.66 and 255.28 is: 352.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.70 : 609.66 = 255.28 : x
  2. Step 2: Convert to fraction form
    441.70/609.66 = 255.28/x
  3. Step 3: Cross multiply
    441.70x = 609.66 × 255.28
  4. Step 4: Simplify right side
    441.70x = 155,634.00
  5. Step 5: Solve for x
    x = 155,634.00/441.70
  6. Step 6: Final answer
    x = 352.35

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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.