Finding the Fourth Proportional to 201.36, 277.80 and 122.70
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Solution
The fourth proportional to 201.36, 277.80 and 122.70 is: 169.28
Step by Step Solution
- Step 1: Write the proportion equation
201.36 : 277.80 = 122.70 : x - Step 2: Convert to fraction form
201.36/277.80 = 122.70/x - Step 3: Cross multiply
201.36x = 277.80 × 122.70 - Step 4: Simplify right side
201.36x = 34,086.06 - Step 5: Solve for x
x = 34,086.06/201.36 - Step 6: Final answer
x = 169.28
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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.