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Finding the Fourth Proportional to 325.45, 448.59 and 226.99

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Solution

The fourth proportional to 325.45, 448.59 and 226.99 is: 312.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.45 : 448.59 = 226.99 : x
  2. Step 2: Convert to fraction form
    325.45/448.59 = 226.99/x
  3. Step 3: Cross multiply
    325.45x = 448.59 × 226.99
  4. Step 4: Simplify right side
    325.45x = 101,825.44
  5. Step 5: Solve for x
    x = 101,825.44/325.45
  6. Step 6: Final answer
    x = 312.88

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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.