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Finding the Fourth Proportional to 225.18, 339.30 and 185.49

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Solution

The fourth proportional to 225.18, 339.30 and 185.49 is: 279.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.18 : 339.30 = 185.49 : x
  2. Step 2: Convert to fraction form
    225.18/339.30 = 185.49/x
  3. Step 3: Cross multiply
    225.18x = 339.30 × 185.49
  4. Step 4: Simplify right side
    225.18x = 62,936.76
  5. Step 5: Solve for x
    x = 62,936.76/225.18
  6. Step 6: Final answer
    x = 279.50

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.