Finding the Fourth Proportional to 201.21, 277.67 and 113.88
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Solution
The fourth proportional to 201.21, 277.67 and 113.88 is: 157.15
Step by Step Solution
- Step 1: Write the proportion equation
201.21 : 277.67 = 113.88 : x - Step 2: Convert to fraction form
201.21/277.67 = 113.88/x - Step 3: Cross multiply
201.21x = 277.67 × 113.88 - Step 4: Simplify right side
201.21x = 31,621.06 - Step 5: Solve for x
x = 31,621.06/201.21 - Step 6: Final answer
x = 157.15
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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.