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Finding the Fourth Proportional to 34.74, 52.09 and 18.49

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Solution

The fourth proportional to 34.74, 52.09 and 18.49 is: 27.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.74 : 52.09 = 18.49 : x
  2. Step 2: Convert to fraction form
    34.74/52.09 = 18.49/x
  3. Step 3: Cross multiply
    34.74x = 52.09 × 18.49
  4. Step 4: Simplify right side
    34.74x = 962.88
  5. Step 5: Solve for x
    x = 962.88/34.74
  6. Step 6: Final answer
    x = 27.72

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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.