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Finding the Fourth Proportional to 325.53, 449.15 and 194.45

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Solution

The fourth proportional to 325.53, 449.15 and 194.45 is: 268.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.53 : 449.15 = 194.45 : x
  2. Step 2: Convert to fraction form
    325.53/449.15 = 194.45/x
  3. Step 3: Cross multiply
    325.53x = 449.15 × 194.45
  4. Step 4: Simplify right side
    325.53x = 87,334.00
  5. Step 5: Solve for x
    x = 87,334.00/325.53
  6. Step 6: Final answer
    x = 268.28

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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.