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Finding the Fourth Proportional to 51.56, 77.22 and 34.39

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Solution

The fourth proportional to 51.56, 77.22 and 34.39 is: 51.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.56 : 77.22 = 34.39 : x
  2. Step 2: Convert to fraction form
    51.56/77.22 = 34.39/x
  3. Step 3: Cross multiply
    51.56x = 77.22 × 34.39
  4. Step 4: Simplify right side
    51.56x = 2,655.69
  5. Step 5: Solve for x
    x = 2,655.69/51.56
  6. Step 6: Final answer
    x = 51.51

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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.