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Finding the Fourth Proportional to 34.38, 51.20 and 33

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Solution

The fourth proportional to 34.38, 51.20 and 33 is: 49.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.38 : 51.20 = 33 : x
  2. Step 2: Convert to fraction form
    34.38/51.20 = 33/x
  3. Step 3: Cross multiply
    34.38x = 51.20 × 33
  4. Step 4: Simplify right side
    34.38x = 1,689.44
  5. Step 5: Solve for x
    x = 1,689.44/34.38
  6. Step 6: Final answer
    x = 49.14

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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.