Finding the Fourth Proportional to 84.83, 126.75 and 68.63
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Solution
The fourth proportional to 84.83, 126.75 and 68.63 is: 102.54
Step by Step Solution
- Step 1: Write the proportion equation
84.83 : 126.75 = 68.63 : x - Step 2: Convert to fraction form
84.83/126.75 = 68.63/x - Step 3: Cross multiply
84.83x = 126.75 × 68.63 - Step 4: Simplify right side
84.83x = 8,698.85 - Step 5: Solve for x
x = 8,698.85/84.83 - Step 6: Final answer
x = 102.54
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.