Finding the Fourth Proportional to 84.44, 126.77 and 71.08
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Solution
The fourth proportional to 84.44, 126.77 and 71.08 is: 106.71
Step by Step Solution
- Step 1: Write the proportion equation
84.44 : 126.77 = 71.08 : x - Step 2: Convert to fraction form
84.44/126.77 = 71.08/x - Step 3: Cross multiply
84.44x = 126.77 × 71.08 - Step 4: Simplify right side
84.44x = 9,010.81 - Step 5: Solve for x
x = 9,010.81/84.44 - Step 6: Final answer
x = 106.71
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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.