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Finding the Fourth Proportional to 548.44, 822.05 and 223.43

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Solution

The fourth proportional to 548.44, 822.05 and 223.43 is: 334.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.44 : 822.05 = 223.43 : x
  2. Step 2: Convert to fraction form
    548.44/822.05 = 223.43/x
  3. Step 3: Cross multiply
    548.44x = 822.05 × 223.43
  4. Step 4: Simplify right side
    548.44x = 183,670.63
  5. Step 5: Solve for x
    x = 183,670.63/548.44
  6. Step 6: Final answer
    x = 334.90

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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.