Finding the Fourth Proportional to 201.84, 302.94 and 129.84
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Solution
The fourth proportional to 201.84, 302.94 and 129.84 is: 194.88
Step by Step Solution
- Step 1: Write the proportion equation
201.84 : 302.94 = 129.84 : x - Step 2: Convert to fraction form
201.84/302.94 = 129.84/x - Step 3: Cross multiply
201.84x = 302.94 × 129.84 - Step 4: Simplify right side
201.84x = 39,333.73 - Step 5: Solve for x
x = 39,333.73/201.84 - Step 6: Final answer
x = 194.88
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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.