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Finding the Fourth Proportional to 34.38, 51.44 and 30.98

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Solution

The fourth proportional to 34.38, 51.44 and 30.98 is: 46.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.38 : 51.44 = 30.98 : x
  2. Step 2: Convert to fraction form
    34.38/51.44 = 30.98/x
  3. Step 3: Cross multiply
    34.38x = 51.44 × 30.98
  4. Step 4: Simplify right side
    34.38x = 1,593.61
  5. Step 5: Solve for x
    x = 1,593.61/34.38
  6. Step 6: Final answer
    x = 46.35

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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.