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Finding the Fourth Proportional to 249.88, 374.69 and 76.51

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Solution

The fourth proportional to 249.88, 374.69 and 76.51 is: 114.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.88 : 374.69 = 76.51 : x
  2. Step 2: Convert to fraction form
    249.88/374.69 = 76.51/x
  3. Step 3: Cross multiply
    249.88x = 374.69 × 76.51
  4. Step 4: Simplify right side
    249.88x = 28,667.34
  5. Step 5: Solve for x
    x = 28,667.34/249.88
  6. Step 6: Final answer
    x = 114.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.