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Finding the Fourth Proportional to 441.54, 606.09 and 391.32

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Solution

The fourth proportional to 441.54, 606.09 and 391.32 is: 537.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.54 : 606.09 = 391.32 : x
  2. Step 2: Convert to fraction form
    441.54/606.09 = 391.32/x
  3. Step 3: Cross multiply
    441.54x = 606.09 × 391.32
  4. Step 4: Simplify right side
    441.54x = 237,175.14
  5. Step 5: Solve for x
    x = 237,175.14/441.54
  6. Step 6: Final answer
    x = 537.15

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.