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Finding the Fourth Proportional to 248.91, 343.52 and 207.39

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Solution

The fourth proportional to 248.91, 343.52 and 207.39 is: 286.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.91 : 343.52 = 207.39 : x
  2. Step 2: Convert to fraction form
    248.91/343.52 = 207.39/x
  3. Step 3: Cross multiply
    248.91x = 343.52 × 207.39
  4. Step 4: Simplify right side
    248.91x = 71,242.61
  5. Step 5: Solve for x
    x = 71,242.61/248.91
  6. Step 6: Final answer
    x = 286.22

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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.