Finding the Fourth Proportional to 201.60, 301.84 and 129.28
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Solution
The fourth proportional to 201.60, 301.84 and 129.28 is: 193.56
Step by Step Solution
- Step 1: Write the proportion equation
201.60 : 301.84 = 129.28 : x - Step 2: Convert to fraction form
201.60/301.84 = 129.28/x - Step 3: Cross multiply
201.60x = 301.84 × 129.28 - Step 4: Simplify right side
201.60x = 39,021.88 - Step 5: Solve for x
x = 39,021.88/201.60 - Step 6: Final answer
x = 193.56
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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.