Finding the Fourth Proportional to 201.28, 301.84 and 79.48
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Solution
The fourth proportional to 201.28, 301.84 and 79.48 is: 119.19
Step by Step Solution
- Step 1: Write the proportion equation
201.28 : 301.84 = 79.48 : x - Step 2: Convert to fraction form
201.28/301.84 = 79.48/x - Step 3: Cross multiply
201.28x = 301.84 × 79.48 - Step 4: Simplify right side
201.28x = 23,990.24 - Step 5: Solve for x
x = 23,990.24/201.28 - Step 6: Final answer
x = 119.19
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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.