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Finding the Fourth Proportional to 549.36, 823.78 and 444.99

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Solution

The fourth proportional to 549.36, 823.78 and 444.99 is: 667.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.36 : 823.78 = 444.99 : x
  2. Step 2: Convert to fraction form
    549.36/823.78 = 444.99/x
  3. Step 3: Cross multiply
    549.36x = 823.78 × 444.99
  4. Step 4: Simplify right side
    549.36x = 366,569.31
  5. Step 5: Solve for x
    x = 366,569.31/549.36
  6. Step 6: Final answer
    x = 667.27

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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.