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Finding the Fourth Proportional to 34.17, 50.96 and 30.71

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Solution

The fourth proportional to 34.17, 50.96 and 30.71 is: 45.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.17 : 50.96 = 30.71 : x
  2. Step 2: Convert to fraction form
    34.17/50.96 = 30.71/x
  3. Step 3: Cross multiply
    34.17x = 50.96 × 30.71
  4. Step 4: Simplify right side
    34.17x = 1,564.57
  5. Step 5: Solve for x
    x = 1,564.57/34.17
  6. Step 6: Final answer
    x = 45.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.