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Finding the Fourth Proportional to 550.85, 822.35 and 531.63

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Solution

The fourth proportional to 550.85, 822.35 and 531.63 is: 793.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.85 : 822.35 = 531.63 : x
  2. Step 2: Convert to fraction form
    550.85/822.35 = 531.63/x
  3. Step 3: Cross multiply
    550.85x = 822.35 × 531.63
  4. Step 4: Simplify right side
    550.85x = 437,185.93
  5. Step 5: Solve for x
    x = 437,185.93/550.85
  6. Step 6: Final answer
    x = 793.66

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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.