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Finding the Fourth Proportional to 249.64, 344.82 and 245.80

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Solution

The fourth proportional to 249.64, 344.82 and 245.80 is: 339.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.64 : 344.82 = 245.80 : x
  2. Step 2: Convert to fraction form
    249.64/344.82 = 245.80/x
  3. Step 3: Cross multiply
    249.64x = 344.82 × 245.80
  4. Step 4: Simplify right side
    249.64x = 84,756.76
  5. Step 5: Solve for x
    x = 84,756.76/249.64
  6. Step 6: Final answer
    x = 339.52

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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.