Finding the Fourth Proportional to 201.33, 277.79 and 113.99
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Solution
The fourth proportional to 201.33, 277.79 and 113.99 is: 157.28
Step by Step Solution
- Step 1: Write the proportion equation
201.33 : 277.79 = 113.99 : x - Step 2: Convert to fraction form
201.33/277.79 = 113.99/x - Step 3: Cross multiply
201.33x = 277.79 × 113.99 - Step 4: Simplify right side
201.33x = 31,664.39 - Step 5: Solve for x
x = 31,664.39/201.33 - Step 6: Final answer
x = 157.28
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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.