Finding the Fourth Proportional to 201.66, 302.49 and 85.99
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Solution
The fourth proportional to 201.66, 302.49 and 85.99 is: 128.98
Step by Step Solution
- Step 1: Write the proportion equation
201.66 : 302.49 = 85.99 : x - Step 2: Convert to fraction form
201.66/302.49 = 85.99/x - Step 3: Cross multiply
201.66x = 302.49 × 85.99 - Step 4: Simplify right side
201.66x = 26,009.60 - Step 5: Solve for x
x = 26,009.60/201.66 - Step 6: Final answer
x = 128.98
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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.