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Finding the Fourth Proportional to 325.30, 449.07 and 220.93

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Solution

The fourth proportional to 325.30, 449.07 and 220.93 is: 304.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.30 : 449.07 = 220.93 : x
  2. Step 2: Convert to fraction form
    325.30/449.07 = 220.93/x
  3. Step 3: Cross multiply
    325.30x = 449.07 × 220.93
  4. Step 4: Simplify right side
    325.30x = 99,213.04
  5. Step 5: Solve for x
    x = 99,213.04/325.30
  6. Step 6: Final answer
    x = 304.99

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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.