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Finding the Fourth Proportional to 252.49, 348.71 and 186.88

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Solution

The fourth proportional to 252.49, 348.71 and 186.88 is: 258.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.49 : 348.71 = 186.88 : x
  2. Step 2: Convert to fraction form
    252.49/348.71 = 186.88/x
  3. Step 3: Cross multiply
    252.49x = 348.71 × 186.88
  4. Step 4: Simplify right side
    252.49x = 65,166.75
  5. Step 5: Solve for x
    x = 65,166.75/252.49
  6. Step 6: Final answer
    x = 258.09

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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.