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Finding the Fourth Proportional to 249, 343.37 and 150.74

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Solution

The fourth proportional to 249, 343.37 and 150.74 is: 207.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    249 : 343.37 = 150.74 : x
  2. Step 2: Convert to fraction form
    249/343.37 = 150.74/x
  3. Step 3: Cross multiply
    249x = 343.37 × 150.74
  4. Step 4: Simplify right side
    249x = 51,759.59
  5. Step 5: Solve for x
    x = 51,759.59/249
  6. Step 6: Final answer
    x = 207.87

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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.