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Finding the Fourth Proportional to 549.26, 822.99 and 492.80

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Solution

The fourth proportional to 549.26, 822.99 and 492.80 is: 738.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.26 : 822.99 = 492.80 : x
  2. Step 2: Convert to fraction form
    549.26/822.99 = 492.80/x
  3. Step 3: Cross multiply
    549.26x = 822.99 × 492.80
  4. Step 4: Simplify right side
    549.26x = 405,569.47
  5. Step 5: Solve for x
    x = 405,569.47/549.26
  6. Step 6: Final answer
    x = 738.39

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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.