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Finding the Fourth Proportional to 548.37, 821.75 and 304.56

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Solution

The fourth proportional to 548.37, 821.75 and 304.56 is: 456.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.37 : 821.75 = 304.56 : x
  2. Step 2: Convert to fraction form
    548.37/821.75 = 304.56/x
  3. Step 3: Cross multiply
    548.37x = 821.75 × 304.56
  4. Step 4: Simplify right side
    548.37x = 250,270.66
  5. Step 5: Solve for x
    x = 250,270.66/548.37
  6. Step 6: Final answer
    x = 456.39

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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.