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Finding the Fourth Proportional to 549.79, 828.63 and 544.32

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Solution

The fourth proportional to 549.79, 828.63 and 544.32 is: 820.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.79 : 828.63 = 544.32 : x
  2. Step 2: Convert to fraction form
    549.79/828.63 = 544.32/x
  3. Step 3: Cross multiply
    549.79x = 828.63 × 544.32
  4. Step 4: Simplify right side
    549.79x = 451,039.88
  5. Step 5: Solve for x
    x = 451,039.88/549.79
  6. Step 6: Final answer
    x = 820.39

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.