Finding the Fourth Proportional to 201.87, 302.81 and 133.38
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Solution
The fourth proportional to 201.87, 302.81 and 133.38 is: 200.07
Step by Step Solution
- Step 1: Write the proportion equation
201.87 : 302.81 = 133.38 : x - Step 2: Convert to fraction form
201.87/302.81 = 133.38/x - Step 3: Cross multiply
201.87x = 302.81 × 133.38 - Step 4: Simplify right side
201.87x = 40,389.13 - Step 5: Solve for x
x = 40,389.13/201.87 - Step 6: Final answer
x = 200.07
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.