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Finding the Fourth Proportional to 190.01, 262.21 and 102.68

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Solution

The fourth proportional to 190.01, 262.21 and 102.68 is: 141.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.01 : 262.21 = 102.68 : x
  2. Step 2: Convert to fraction form
    190.01/262.21 = 102.68/x
  3. Step 3: Cross multiply
    190.01x = 262.21 × 102.68
  4. Step 4: Simplify right side
    190.01x = 26,922.67
  5. Step 5: Solve for x
    x = 26,922.67/190.01
  6. Step 6: Final answer
    x = 141.69

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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.