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Finding the Fourth Proportional to 218.29, 300.23 and 190.69

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Solution

The fourth proportional to 218.29, 300.23 and 190.69 is: 262.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.29 : 300.23 = 190.69 : x
  2. Step 2: Convert to fraction form
    218.29/300.23 = 190.69/x
  3. Step 3: Cross multiply
    218.29x = 300.23 × 190.69
  4. Step 4: Simplify right side
    218.29x = 57,250.86
  5. Step 5: Solve for x
    x = 57,250.86/218.29
  6. Step 6: Final answer
    x = 262.27

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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.