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Finding the Fourth Proportional to 249.99, 344.86 and 151.57

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Solution

The fourth proportional to 249.99, 344.86 and 151.57 is: 209.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.99 : 344.86 = 151.57 : x
  2. Step 2: Convert to fraction form
    249.99/344.86 = 151.57/x
  3. Step 3: Cross multiply
    249.99x = 344.86 × 151.57
  4. Step 4: Simplify right side
    249.99x = 52,270.48
  5. Step 5: Solve for x
    x = 52,270.48/249.99
  6. Step 6: Final answer
    x = 209.09

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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.