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Finding the Fourth Proportional to 549.25, 822.94 and 479.99

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Solution

The fourth proportional to 549.25, 822.94 and 479.99 is: 719.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.25 : 822.94 = 479.99 : x
  2. Step 2: Convert to fraction form
    549.25/822.94 = 479.99/x
  3. Step 3: Cross multiply
    549.25x = 822.94 × 479.99
  4. Step 4: Simplify right side
    549.25x = 395,002.97
  5. Step 5: Solve for x
    x = 395,002.97/549.25
  6. Step 6: Final answer
    x = 719.17

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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.