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Finding the Fourth Proportional to 50.91, 76.62 and 45.94

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Solution

The fourth proportional to 50.91, 76.62 and 45.94 is: 69.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.91 : 76.62 = 45.94 : x
  2. Step 2: Convert to fraction form
    50.91/76.62 = 45.94/x
  3. Step 3: Cross multiply
    50.91x = 76.62 × 45.94
  4. Step 4: Simplify right side
    50.91x = 3,519.92
  5. Step 5: Solve for x
    x = 3,519.92/50.91
  6. Step 6: Final answer
    x = 69.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.