Finding the Fourth Proportional to 201.91, 302.79 and 64.92
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Solution
The fourth proportional to 201.91, 302.79 and 64.92 is: 97.36
Step by Step Solution
- Step 1: Write the proportion equation
201.91 : 302.79 = 64.92 : x - Step 2: Convert to fraction form
201.91/302.79 = 64.92/x - Step 3: Cross multiply
201.91x = 302.79 × 64.92 - Step 4: Simplify right side
201.91x = 19,657.13 - Step 5: Solve for x
x = 19,657.13/201.91 - Step 6: Final answer
x = 97.36
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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.