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Finding the Fourth Proportional to 248.28, 343.12 and 186.32

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Solution

The fourth proportional to 248.28, 343.12 and 186.32 is: 257.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.28 : 343.12 = 186.32 : x
  2. Step 2: Convert to fraction form
    248.28/343.12 = 186.32/x
  3. Step 3: Cross multiply
    248.28x = 343.12 × 186.32
  4. Step 4: Simplify right side
    248.28x = 63,930.12
  5. Step 5: Solve for x
    x = 63,930.12/248.28
  6. Step 6: Final answer
    x = 257.49

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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.