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Finding the Fourth Proportional to 34.82, 51.96 and 31.07

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Solution

The fourth proportional to 34.82, 51.96 and 31.07 is: 46.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.82 : 51.96 = 31.07 : x
  2. Step 2: Convert to fraction form
    34.82/51.96 = 31.07/x
  3. Step 3: Cross multiply
    34.82x = 51.96 × 31.07
  4. Step 4: Simplify right side
    34.82x = 1,614.14
  5. Step 5: Solve for x
    x = 1,614.14/34.82
  6. Step 6: Final answer
    x = 46.36

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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.