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Finding the Fourth Proportional to 441.90, 662.64 and 259.34

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Solution

The fourth proportional to 441.90, 662.64 and 259.34 is: 388.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.90 : 662.64 = 259.34 : x
  2. Step 2: Convert to fraction form
    441.90/662.64 = 259.34/x
  3. Step 3: Cross multiply
    441.90x = 662.64 × 259.34
  4. Step 4: Simplify right side
    441.90x = 171,849.06
  5. Step 5: Solve for x
    x = 171,849.06/441.90
  6. Step 6: Final answer
    x = 388.89

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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.