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Finding the Fourth Proportional to 548.10, 756.09 and 351.81

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Solution

The fourth proportional to 548.10, 756.09 and 351.81 is: 485.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.10 : 756.09 = 351.81 : x
  2. Step 2: Convert to fraction form
    548.10/756.09 = 351.81/x
  3. Step 3: Cross multiply
    548.10x = 756.09 × 351.81
  4. Step 4: Simplify right side
    548.10x = 266,000.02
  5. Step 5: Solve for x
    x = 266,000.02/548.10
  6. Step 6: Final answer
    x = 485.31

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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.