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Finding the Fourth Proportional to 149.36, 223.47 and 129.33

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Solution

The fourth proportional to 149.36, 223.47 and 129.33 is: 193.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.36 : 223.47 = 129.33 : x
  2. Step 2: Convert to fraction form
    149.36/223.47 = 129.33/x
  3. Step 3: Cross multiply
    149.36x = 223.47 × 129.33
  4. Step 4: Simplify right side
    149.36x = 28,901.38
  5. Step 5: Solve for x
    x = 28,901.38/149.36
  6. Step 6: Final answer
    x = 193.51

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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.