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Finding the Fourth Proportional to 248.14, 343.38 and 211.24

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Solution

The fourth proportional to 248.14, 343.38 and 211.24 is: 292.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.14 : 343.38 = 211.24 : x
  2. Step 2: Convert to fraction form
    248.14/343.38 = 211.24/x
  3. Step 3: Cross multiply
    248.14x = 343.38 × 211.24
  4. Step 4: Simplify right side
    248.14x = 72,535.59
  5. Step 5: Solve for x
    x = 72,535.59/248.14
  6. Step 6: Final answer
    x = 292.32

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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.