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Finding the Fourth Proportional to 217.41, 300.15 and 147.57

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Solution

The fourth proportional to 217.41, 300.15 and 147.57 is: 203.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.41 : 300.15 = 147.57 : x
  2. Step 2: Convert to fraction form
    217.41/300.15 = 147.57/x
  3. Step 3: Cross multiply
    217.41x = 300.15 × 147.57
  4. Step 4: Simplify right side
    217.41x = 44,293.14
  5. Step 5: Solve for x
    x = 44,293.14/217.41
  6. Step 6: Final answer
    x = 203.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.