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Finding the Fourth Proportional to 548.23, 756.34 and 351.85

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Solution

The fourth proportional to 548.23, 756.34 and 351.85 is: 485.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.23 : 756.34 = 351.85 : x
  2. Step 2: Convert to fraction form
    548.23/756.34 = 351.85/x
  3. Step 3: Cross multiply
    548.23x = 756.34 × 351.85
  4. Step 4: Simplify right side
    548.23x = 266,118.23
  5. Step 5: Solve for x
    x = 266,118.23/548.23
  6. Step 6: Final answer
    x = 485.41

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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.