Finding the Fourth Proportional to 201.74, 302.20 and 170.75
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Solution
The fourth proportional to 201.74, 302.20 and 170.75 is: 255.79
Step by Step Solution
- Step 1: Write the proportion equation
201.74 : 302.20 = 170.75 : x - Step 2: Convert to fraction form
201.74/302.20 = 170.75/x - Step 3: Cross multiply
201.74x = 302.20 × 170.75 - Step 4: Simplify right side
201.74x = 51,600.98 - Step 5: Solve for x
x = 51,600.98/201.74 - Step 6: Final answer
x = 255.79
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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.