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Finding the Fourth Proportional to 190.03, 261.11 and 151.15

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Solution

The fourth proportional to 190.03, 261.11 and 151.15 is: 207.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.03 : 261.11 = 151.15 : x
  2. Step 2: Convert to fraction form
    190.03/261.11 = 151.15/x
  3. Step 3: Cross multiply
    190.03x = 261.11 × 151.15
  4. Step 4: Simplify right side
    190.03x = 39,466.78
  5. Step 5: Solve for x
    x = 39,466.78/190.03
  6. Step 6: Final answer
    x = 207.69

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.