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Finding the Fourth Proportional to 217.58, 300.26 and 124.35

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Solution

The fourth proportional to 217.58, 300.26 and 124.35 is: 171.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.58 : 300.26 = 124.35 : x
  2. Step 2: Convert to fraction form
    217.58/300.26 = 124.35/x
  3. Step 3: Cross multiply
    217.58x = 300.26 × 124.35
  4. Step 4: Simplify right side
    217.58x = 37,335.21
  5. Step 5: Solve for x
    x = 37,335.21/217.58
  6. Step 6: Final answer
    x = 171.59

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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.