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Finding the Fourth Proportional to 441.92, 662.34 and 287.48

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Solution

The fourth proportional to 441.92, 662.34 and 287.48 is: 430.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.92 : 662.34 = 287.48 : x
  2. Step 2: Convert to fraction form
    441.92/662.34 = 287.48/x
  3. Step 3: Cross multiply
    441.92x = 662.34 × 287.48
  4. Step 4: Simplify right side
    441.92x = 190,409.50
  5. Step 5: Solve for x
    x = 190,409.50/441.92
  6. Step 6: Final answer
    x = 430.87

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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.