Finding the Fourth Proportional to 201.36, 302.09 and 91.64
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Solution
The fourth proportional to 201.36, 302.09 and 91.64 is: 137.47
Step by Step Solution
- Step 1: Write the proportion equation
201.36 : 302.09 = 91.64 : x - Step 2: Convert to fraction form
201.36/302.09 = 91.64/x - Step 3: Cross multiply
201.36x = 302.09 × 91.64 - Step 4: Simplify right side
201.36x = 27,681.56 - Step 5: Solve for x
x = 27,681.56/201.36 - Step 6: Final answer
x = 137.47
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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.