Finding the Fourth Proportional to 84.08, 126.23 and 51.68
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Solution
The fourth proportional to 84.08, 126.23 and 51.68 is: 77.59
Step by Step Solution
- Step 1: Write the proportion equation
84.08 : 126.23 = 51.68 : x - Step 2: Convert to fraction form
84.08/126.23 = 51.68/x - Step 3: Cross multiply
84.08x = 126.23 × 51.68 - Step 4: Simplify right side
84.08x = 6,523.62 - Step 5: Solve for x
x = 6,523.62/84.08 - Step 6: Final answer
x = 77.59
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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.