Finding the Fourth Proportional to 201.84, 302.80 and 115.22
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Solution
The fourth proportional to 201.84, 302.80 and 115.22 is: 172.85
Step by Step Solution
- Step 1: Write the proportion equation
201.84 : 302.80 = 115.22 : x - Step 2: Convert to fraction form
201.84/302.80 = 115.22/x - Step 3: Cross multiply
201.84x = 302.80 × 115.22 - Step 4: Simplify right side
201.84x = 34,887.10 - Step 5: Solve for x
x = 34,887.10/201.84 - Step 6: Final answer
x = 172.85
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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.