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Finding the Fourth Proportional to 148.36, 203.23 and 143.72

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Solution

The fourth proportional to 148.36, 203.23 and 143.72 is: 196.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.36 : 203.23 = 143.72 : x
  2. Step 2: Convert to fraction form
    148.36/203.23 = 143.72/x
  3. Step 3: Cross multiply
    148.36x = 203.23 × 143.72
  4. Step 4: Simplify right side
    148.36x = 29,208.22
  5. Step 5: Solve for x
    x = 29,208.22/148.36
  6. Step 6: Final answer
    x = 196.87

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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.