Finding the Fourth Proportional to 201.99, 302.97 and 86.35
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Solution
The fourth proportional to 201.99, 302.97 and 86.35 is: 129.52
Step by Step Solution
- Step 1: Write the proportion equation
201.99 : 302.97 = 86.35 : x - Step 2: Convert to fraction form
201.99/302.97 = 86.35/x - Step 3: Cross multiply
201.99x = 302.97 × 86.35 - Step 4: Simplify right side
201.99x = 26,161.59 - Step 5: Solve for x
x = 26,161.59/201.99 - Step 6: Final answer
x = 129.52
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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.