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Finding the Fourth Proportional to 548.08, 756.45 and 351.67

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Solution

The fourth proportional to 548.08, 756.45 and 351.67 is: 485.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.08 : 756.45 = 351.67 : x
  2. Step 2: Convert to fraction form
    548.08/756.45 = 351.67/x
  3. Step 3: Cross multiply
    548.08x = 756.45 × 351.67
  4. Step 4: Simplify right side
    548.08x = 266,020.77
  5. Step 5: Solve for x
    x = 266,020.77/548.08
  6. Step 6: Final answer
    x = 485.37

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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.