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Finding the Fourth Proportional to 248.39, 343.01 and 211.54

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Solution

The fourth proportional to 248.39, 343.01 and 211.54 is: 292.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.39 : 343.01 = 211.54 : x
  2. Step 2: Convert to fraction form
    248.39/343.01 = 211.54/x
  3. Step 3: Cross multiply
    248.39x = 343.01 × 211.54
  4. Step 4: Simplify right side
    248.39x = 72,560.01
  5. Step 5: Solve for x
    x = 72,560.01/248.39
  6. Step 6: Final answer
    x = 292.12

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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.