Finding the Fourth Proportional to 201.74, 302.81 and 140.99
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Solution
The fourth proportional to 201.74, 302.81 and 140.99 is: 211.62
Step by Step Solution
- Step 1: Write the proportion equation
201.74 : 302.81 = 140.99 : x - Step 2: Convert to fraction form
201.74/302.81 = 140.99/x - Step 3: Cross multiply
201.74x = 302.81 × 140.99 - Step 4: Simplify right side
201.74x = 42,690.96 - Step 5: Solve for x
x = 42,690.96/201.74 - Step 6: Final answer
x = 211.62
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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.