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Finding the Fourth Proportional to 552.29, 821.73 and 550.40

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Solution

The fourth proportional to 552.29, 821.73 and 550.40 is: 818.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.29 : 821.73 = 550.40 : x
  2. Step 2: Convert to fraction form
    552.29/821.73 = 550.40/x
  3. Step 3: Cross multiply
    552.29x = 821.73 × 550.40
  4. Step 4: Simplify right side
    552.29x = 452,277.44
  5. Step 5: Solve for x
    x = 452,277.44/552.29
  6. Step 6: Final answer
    x = 818.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.