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Finding the Fourth Proportional to 548.47, 756.63 and 324.25

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Solution

The fourth proportional to 548.47, 756.63 and 324.25 is: 447.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.47 : 756.63 = 324.25 : x
  2. Step 2: Convert to fraction form
    548.47/756.63 = 324.25/x
  3. Step 3: Cross multiply
    548.47x = 756.63 × 324.25
  4. Step 4: Simplify right side
    548.47x = 245,335.39
  5. Step 5: Solve for x
    x = 245,335.39/548.47
  6. Step 6: Final answer
    x = 447.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.