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Finding the Fourth Proportional to 263.10, 394.67 and 126.19

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Solution

The fourth proportional to 263.10, 394.67 and 126.19 is: 189.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.10 : 394.67 = 126.19 : x
  2. Step 2: Convert to fraction form
    263.10/394.67 = 126.19/x
  3. Step 3: Cross multiply
    263.10x = 394.67 × 126.19
  4. Step 4: Simplify right side
    263.10x = 49,803.41
  5. Step 5: Solve for x
    x = 49,803.41/263.10
  6. Step 6: Final answer
    x = 189.29

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Why These Related Problems?

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