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Finding the Fourth Proportional to 150.09, 225.02 and 68.99

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Solution

The fourth proportional to 150.09, 225.02 and 68.99 is: 103.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.09 : 225.02 = 68.99 : x
  2. Step 2: Convert to fraction form
    150.09/225.02 = 68.99/x
  3. Step 3: Cross multiply
    150.09x = 225.02 × 68.99
  4. Step 4: Simplify right side
    150.09x = 15,522.66
  5. Step 5: Solve for x
    x = 15,522.66/150.09
  6. Step 6: Final answer
    x = 103.42

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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.