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Finding the Fourth Proportional to 225.43, 336.31 and 195.05

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Solution

The fourth proportional to 225.43, 336.31 and 195.05 is: 290.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.43 : 336.31 = 195.05 : x
  2. Step 2: Convert to fraction form
    225.43/336.31 = 195.05/x
  3. Step 3: Cross multiply
    225.43x = 336.31 × 195.05
  4. Step 4: Simplify right side
    225.43x = 65,597.62
  5. Step 5: Solve for x
    x = 65,597.62/225.43
  6. Step 6: Final answer
    x = 290.99

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.