Finding the Fourth Proportional to 201.74, 302.34 and 129.44
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Solution
The fourth proportional to 201.74, 302.34 and 129.44 is: 193.99
Step by Step Solution
- Step 1: Write the proportion equation
201.74 : 302.34 = 129.44 : x - Step 2: Convert to fraction form
201.74/302.34 = 129.44/x - Step 3: Cross multiply
201.74x = 302.34 × 129.44 - Step 4: Simplify right side
201.74x = 39,134.89 - Step 5: Solve for x
x = 39,134.89/201.74 - Step 6: Final answer
x = 193.99
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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.