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Finding the Fourth Proportional to 217.43, 300.03 and 124.15

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Solution

The fourth proportional to 217.43, 300.03 and 124.15 is: 171.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.43 : 300.03 = 124.15 : x
  2. Step 2: Convert to fraction form
    217.43/300.03 = 124.15/x
  3. Step 3: Cross multiply
    217.43x = 300.03 × 124.15
  4. Step 4: Simplify right side
    217.43x = 37,247.22
  5. Step 5: Solve for x
    x = 37,247.22/217.43
  6. Step 6: Final answer
    x = 171.31

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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.