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Finding the Fourth Proportional to 149.07, 222.44 and 129.63

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Solution

The fourth proportional to 149.07, 222.44 and 129.63 is: 193.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.07 : 222.44 = 129.63 : x
  2. Step 2: Convert to fraction form
    149.07/222.44 = 129.63/x
  3. Step 3: Cross multiply
    149.07x = 222.44 × 129.63
  4. Step 4: Simplify right side
    149.07x = 28,834.25
  5. Step 5: Solve for x
    x = 28,834.25/149.07
  6. Step 6: Final answer
    x = 193.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.