Finding the Fourth Proportional to 306.09, 422.28 and 201.20
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Solution
The fourth proportional to 306.09, 422.28 and 201.20 is: 277.57
Step by Step Solution
- Step 1: Write the proportion equation
306.09 : 422.28 = 201.20 : x - Step 2: Convert to fraction form
306.09/422.28 = 201.20/x - Step 3: Cross multiply
306.09x = 422.28 × 201.20 - Step 4: Simplify right side
306.09x = 84,960.62 - Step 5: Solve for x
x = 84,960.62/306.09 - Step 6: Final answer
x = 277.57
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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.