Finding the Fourth Proportional to 201.21, 301.81 and 98.44
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Solution
The fourth proportional to 201.21, 301.81 and 98.44 is: 147.66
Step by Step Solution
- Step 1: Write the proportion equation
201.21 : 301.81 = 98.44 : x - Step 2: Convert to fraction form
201.21/301.81 = 98.44/x - Step 3: Cross multiply
201.21x = 301.81 × 98.44 - Step 4: Simplify right side
201.21x = 29,710.18 - Step 5: Solve for x
x = 29,710.18/201.21 - Step 6: Final answer
x = 147.66
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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.