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Finding the Fourth Proportional to 549.63, 822.44 and 519.95

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Solution

The fourth proportional to 549.63, 822.44 and 519.95 is: 778.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.63 : 822.44 = 519.95 : x
  2. Step 2: Convert to fraction form
    549.63/822.44 = 519.95/x
  3. Step 3: Cross multiply
    549.63x = 822.44 × 519.95
  4. Step 4: Simplify right side
    549.63x = 427,620.97
  5. Step 5: Solve for x
    x = 427,620.97/549.63
  6. Step 6: Final answer
    x = 778.02

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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.