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Finding the Fourth Proportional to 34.55, 51.47 and 34.39

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Solution

The fourth proportional to 34.55, 51.47 and 34.39 is: 51.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.55 : 51.47 = 34.39 : x
  2. Step 2: Convert to fraction form
    34.55/51.47 = 34.39/x
  3. Step 3: Cross multiply
    34.55x = 51.47 × 34.39
  4. Step 4: Simplify right side
    34.55x = 1,769.62
  5. Step 5: Solve for x
    x = 1,769.62/34.55
  6. Step 6: Final answer
    x = 51.22

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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.