Finding the Fourth Proportional to 201.67, 278.99 and 194.38
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Solution
The fourth proportional to 201.67, 278.99 and 194.38 is: 268.90
Step by Step Solution
- Step 1: Write the proportion equation
201.67 : 278.99 = 194.38 : x - Step 2: Convert to fraction form
201.67/278.99 = 194.38/x - Step 3: Cross multiply
201.67x = 278.99 × 194.38 - Step 4: Simplify right side
201.67x = 54,229.10 - Step 5: Solve for x
x = 54,229.10/201.67 - Step 6: Final answer
x = 268.90
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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.