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Finding the Fourth Proportional to 550.28, 823.92 and 472.88

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Solution

The fourth proportional to 550.28, 823.92 and 472.88 is: 708.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.28 : 823.92 = 472.88 : x
  2. Step 2: Convert to fraction form
    550.28/823.92 = 472.88/x
  3. Step 3: Cross multiply
    550.28x = 823.92 × 472.88
  4. Step 4: Simplify right side
    550.28x = 389,615.29
  5. Step 5: Solve for x
    x = 389,615.29/550.28
  6. Step 6: Final answer
    x = 708.03

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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.