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Finding the Fourth Proportional to 225.31, 337.97 and 186.43

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Solution

The fourth proportional to 225.31, 337.97 and 186.43 is: 279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.31 : 337.97 = 186.43 : x
  2. Step 2: Convert to fraction form
    225.31/337.97 = 186.43/x
  3. Step 3: Cross multiply
    225.31x = 337.97 × 186.43
  4. Step 4: Simplify right side
    225.31x = 63,006.81
  5. Step 5: Solve for x
    x = 63,006.81/225.31
  6. Step 6: Final answer
    x = 279.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.