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Finding the Fourth Proportional to 76.74, 114.97 and 50.97

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Solution

The fourth proportional to 76.74, 114.97 and 50.97 is: 76.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76.74 : 114.97 = 50.97 : x
  2. Step 2: Convert to fraction form
    76.74/114.97 = 50.97/x
  3. Step 3: Cross multiply
    76.74x = 114.97 × 50.97
  4. Step 4: Simplify right side
    76.74x = 5,860.02
  5. Step 5: Solve for x
    x = 5,860.02/76.74
  6. Step 6: Final answer
    x = 76.36

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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.