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Finding the Fourth Proportional to 548.22, 756.30 and 351.94

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Solution

The fourth proportional to 548.22, 756.30 and 351.94 is: 485.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.22 : 756.30 = 351.94 : x
  2. Step 2: Convert to fraction form
    548.22/756.30 = 351.94/x
  3. Step 3: Cross multiply
    548.22x = 756.30 × 351.94
  4. Step 4: Simplify right side
    548.22x = 266,172.22
  5. Step 5: Solve for x
    x = 266,172.22/548.22
  6. Step 6: Final answer
    x = 485.52

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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.