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Finding the Fourth Proportional to 42.22, 58.20 and 36.14

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Solution

The fourth proportional to 42.22, 58.20 and 36.14 is: 49.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.22 : 58.20 = 36.14 : x
  2. Step 2: Convert to fraction form
    42.22/58.20 = 36.14/x
  3. Step 3: Cross multiply
    42.22x = 58.20 × 36.14
  4. Step 4: Simplify right side
    42.22x = 2,103.35
  5. Step 5: Solve for x
    x = 2,103.35/42.22
  6. Step 6: Final answer
    x = 49.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.