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Finding the Fourth Proportional to 143.73, 215.39 and 103.23

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Solution

The fourth proportional to 143.73, 215.39 and 103.23 is: 154.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.73 : 215.39 = 103.23 : x
  2. Step 2: Convert to fraction form
    143.73/215.39 = 103.23/x
  3. Step 3: Cross multiply
    143.73x = 215.39 × 103.23
  4. Step 4: Simplify right side
    143.73x = 22,234.19
  5. Step 5: Solve for x
    x = 22,234.19/143.73
  6. Step 6: Final answer
    x = 154.69

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.