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Finding the Fourth Proportional to 213.60, 294.74 and 126.25

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Solution

The fourth proportional to 213.60, 294.74 and 126.25 is: 174.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.60 : 294.74 = 126.25 : x
  2. Step 2: Convert to fraction form
    213.60/294.74 = 126.25/x
  3. Step 3: Cross multiply
    213.60x = 294.74 × 126.25
  4. Step 4: Simplify right side
    213.60x = 37,210.93
  5. Step 5: Solve for x
    x = 37,210.93/213.60
  6. Step 6: Final answer
    x = 174.21

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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.