Finding the Fourth Proportional to 201.07, 277.45 and 142.75
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Solution
The fourth proportional to 201.07, 277.45 and 142.75 is: 196.98
Step by Step Solution
- Step 1: Write the proportion equation
201.07 : 277.45 = 142.75 : x - Step 2: Convert to fraction form
201.07/277.45 = 142.75/x - Step 3: Cross multiply
201.07x = 277.45 × 142.75 - Step 4: Simplify right side
201.07x = 39,605.99 - Step 5: Solve for x
x = 39,605.99/201.07 - Step 6: Final answer
x = 196.98
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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.