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Finding the Fourth Proportional to 248.79, 343.39 and 150.56

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Solution

The fourth proportional to 248.79, 343.39 and 150.56 is: 207.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.79 : 343.39 = 150.56 : x
  2. Step 2: Convert to fraction form
    248.79/343.39 = 150.56/x
  3. Step 3: Cross multiply
    248.79x = 343.39 × 150.56
  4. Step 4: Simplify right side
    248.79x = 51,700.80
  5. Step 5: Solve for x
    x = 51,700.80/248.79
  6. Step 6: Final answer
    x = 207.81

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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.