Finding the Fourth Proportional to 198.78, 273.99 and 133.26
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Solution
The fourth proportional to 198.78, 273.99 and 133.26 is: 183.68
Step by Step Solution
- Step 1: Write the proportion equation
198.78 : 273.99 = 133.26 : x - Step 2: Convert to fraction form
198.78/273.99 = 133.26/x - Step 3: Cross multiply
198.78x = 273.99 × 133.26 - Step 4: Simplify right side
198.78x = 36,511.91 - Step 5: Solve for x
x = 36,511.91/198.78 - Step 6: Final answer
x = 183.68
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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.