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Finding the Fourth Proportional to 441.08, 606.15 and 428.79

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Solution

The fourth proportional to 441.08, 606.15 and 428.79 is: 589.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.08 : 606.15 = 428.79 : x
  2. Step 2: Convert to fraction form
    441.08/606.15 = 428.79/x
  3. Step 3: Cross multiply
    441.08x = 606.15 × 428.79
  4. Step 4: Simplify right side
    441.08x = 259,913.33
  5. Step 5: Solve for x
    x = 259,913.33/441.08
  6. Step 6: Final answer
    x = 589.27

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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.