Finding the Fourth Proportional to 84.08, 126.26 and 79.97
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Solution
The fourth proportional to 84.08, 126.26 and 79.97 is: 120.08
Step by Step Solution
- Step 1: Write the proportion equation
84.08 : 126.26 = 79.97 : x - Step 2: Convert to fraction form
84.08/126.26 = 79.97/x - Step 3: Cross multiply
84.08x = 126.26 × 79.97 - Step 4: Simplify right side
84.08x = 10,095.98 - Step 5: Solve for x
x = 10,095.98/84.08 - Step 6: Final answer
x = 120.08
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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.