Finding the Fourth Proportional to 306.05, 422.21 and 201.10
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Solution
The fourth proportional to 306.05, 422.21 and 201.10 is: 277.43
Step by Step Solution
- Step 1: Write the proportion equation
306.05 : 422.21 = 201.10 : x - Step 2: Convert to fraction form
306.05/422.21 = 201.10/x - Step 3: Cross multiply
306.05x = 422.21 × 201.10 - Step 4: Simplify right side
306.05x = 84,906.43 - Step 5: Solve for x
x = 84,906.43/306.05 - Step 6: Final answer
x = 277.43
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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.