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Finding the Fourth Proportional to 325.98, 450.02 and 209.61

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Solution

The fourth proportional to 325.98, 450.02 and 209.61 is: 289.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.98 : 450.02 = 209.61 : x
  2. Step 2: Convert to fraction form
    325.98/450.02 = 209.61/x
  3. Step 3: Cross multiply
    325.98x = 450.02 × 209.61
  4. Step 4: Simplify right side
    325.98x = 94,328.69
  5. Step 5: Solve for x
    x = 94,328.69/325.98
  6. Step 6: Final answer
    x = 289.37

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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.