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Finding the Fourth Proportional to 550.53, 821.86 and 531.29

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Solution

The fourth proportional to 550.53, 821.86 and 531.29 is: 793.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.53 : 821.86 = 531.29 : x
  2. Step 2: Convert to fraction form
    550.53/821.86 = 531.29/x
  3. Step 3: Cross multiply
    550.53x = 821.86 × 531.29
  4. Step 4: Simplify right side
    550.53x = 436,646.73
  5. Step 5: Solve for x
    x = 436,646.73/550.53
  6. Step 6: Final answer
    x = 793.14

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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.