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Finding the Fourth Proportional to 548.76, 822.03 and 305.43

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Solution

The fourth proportional to 548.76, 822.03 and 305.43 is: 457.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.76 : 822.03 = 305.43 : x
  2. Step 2: Convert to fraction form
    548.76/822.03 = 305.43/x
  3. Step 3: Cross multiply
    548.76x = 822.03 × 305.43
  4. Step 4: Simplify right side
    548.76x = 251,072.62
  5. Step 5: Solve for x
    x = 251,072.62/548.76
  6. Step 6: Final answer
    x = 457.53

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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.