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Finding the Fourth Proportional to 441.85, 662.55 and 259.30

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Solution

The fourth proportional to 441.85, 662.55 and 259.30 is: 388.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.85 : 662.55 = 259.30 : x
  2. Step 2: Convert to fraction form
    441.85/662.55 = 259.30/x
  3. Step 3: Cross multiply
    441.85x = 662.55 × 259.30
  4. Step 4: Simplify right side
    441.85x = 171,799.22
  5. Step 5: Solve for x
    x = 171,799.22/441.85
  6. Step 6: Final answer
    x = 388.82

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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.