Finding the Fourth Proportional to 201.70, 302.68 and 129.61
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Solution
The fourth proportional to 201.70, 302.68 and 129.61 is: 194.50
Step by Step Solution
- Step 1: Write the proportion equation
201.70 : 302.68 = 129.61 : x - Step 2: Convert to fraction form
201.70/302.68 = 129.61/x - Step 3: Cross multiply
201.70x = 302.68 × 129.61 - Step 4: Simplify right side
201.70x = 39,229.92 - Step 5: Solve for x
x = 39,229.92/201.70 - Step 6: Final answer
x = 194.50
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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.