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Finding the Fourth Proportional to 548.55, 756.72 and 327.32

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Solution

The fourth proportional to 548.55, 756.72 and 327.32 is: 451.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.55 : 756.72 = 327.32 : x
  2. Step 2: Convert to fraction form
    548.55/756.72 = 327.32/x
  3. Step 3: Cross multiply
    548.55x = 756.72 × 327.32
  4. Step 4: Simplify right side
    548.55x = 247,689.59
  5. Step 5: Solve for x
    x = 247,689.59/548.55
  6. Step 6: Final answer
    x = 451.54

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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.