Finding the Fourth Proportional to 306.44, 422.99 and 201.61
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Solution
The fourth proportional to 306.44, 422.99 and 201.61 is: 278.29
Step by Step Solution
- Step 1: Write the proportion equation
306.44 : 422.99 = 201.61 : x - Step 2: Convert to fraction form
306.44/422.99 = 201.61/x - Step 3: Cross multiply
306.44x = 422.99 × 201.61 - Step 4: Simplify right side
306.44x = 85,279.01 - Step 5: Solve for x
x = 85,279.01/306.44 - Step 6: Final answer
x = 278.29
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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.