Finding the Fourth Proportional to 118.26, 163.01 and 87.08
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Solution
The fourth proportional to 118.26, 163.01 and 87.08 is: 120.03
Step by Step Solution
- Step 1: Write the proportion equation
118.26 : 163.01 = 87.08 : x - Step 2: Convert to fraction form
118.26/163.01 = 87.08/x - Step 3: Cross multiply
118.26x = 163.01 × 87.08 - Step 4: Simplify right side
118.26x = 14,194.31 - Step 5: Solve for x
x = 14,194.31/118.26 - Step 6: Final answer
x = 120.03
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.