Finding the Fourth Proportional to 201.19, 277.63 and 112.66
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Solution
The fourth proportional to 201.19, 277.63 and 112.66 is: 155.46
Step by Step Solution
- Step 1: Write the proportion equation
201.19 : 277.63 = 112.66 : x - Step 2: Convert to fraction form
201.19/277.63 = 112.66/x - Step 3: Cross multiply
201.19x = 277.63 × 112.66 - Step 4: Simplify right side
201.19x = 31,277.80 - Step 5: Solve for x
x = 31,277.80/201.19 - Step 6: Final answer
x = 155.46
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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.