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Finding the Fourth Proportional to 245.18, 367.90 and 108.22

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Solution

The fourth proportional to 245.18, 367.90 and 108.22 is: 162.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.18 : 367.90 = 108.22 : x
  2. Step 2: Convert to fraction form
    245.18/367.90 = 108.22/x
  3. Step 3: Cross multiply
    245.18x = 367.90 × 108.22
  4. Step 4: Simplify right side
    245.18x = 39,814.14
  5. Step 5: Solve for x
    x = 39,814.14/245.18
  6. Step 6: Final answer
    x = 162.39

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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.