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Finding the Fourth Proportional to 225.18, 336.86 and 186.71

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Solution

The fourth proportional to 225.18, 336.86 and 186.71 is: 279.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.18 : 336.86 = 186.71 : x
  2. Step 2: Convert to fraction form
    225.18/336.86 = 186.71/x
  3. Step 3: Cross multiply
    225.18x = 336.86 × 186.71
  4. Step 4: Simplify right side
    225.18x = 62,893.21
  5. Step 5: Solve for x
    x = 62,893.21/225.18
  6. Step 6: Final answer
    x = 279.30

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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.