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Finding the Fourth Proportional to 249.60, 344.28 and 151.32

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Solution

The fourth proportional to 249.60, 344.28 and 151.32 is: 208.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.60 : 344.28 = 151.32 : x
  2. Step 2: Convert to fraction form
    249.60/344.28 = 151.32/x
  3. Step 3: Cross multiply
    249.60x = 344.28 × 151.32
  4. Step 4: Simplify right side
    249.60x = 52,096.45
  5. Step 5: Solve for x
    x = 52,096.45/249.60
  6. Step 6: Final answer
    x = 208.72

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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.