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Finding the Fourth Proportional to 62.18, 93.26 and 18.85

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Solution

The fourth proportional to 62.18, 93.26 and 18.85 is: 28.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.18 : 93.26 = 18.85 : x
  2. Step 2: Convert to fraction form
    62.18/93.26 = 18.85/x
  3. Step 3: Cross multiply
    62.18x = 93.26 × 18.85
  4. Step 4: Simplify right side
    62.18x = 1,757.95
  5. Step 5: Solve for x
    x = 1,757.95/62.18
  6. Step 6: Final answer
    x = 28.27

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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.