Finding the Fourth Proportional to 91.44, 126.36 and 70.97
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Solution
The fourth proportional to 91.44, 126.36 and 70.97 is: 98.07
Step by Step Solution
- Step 1: Write the proportion equation
91.44 : 126.36 = 70.97 : x - Step 2: Convert to fraction form
91.44/126.36 = 70.97/x - Step 3: Cross multiply
91.44x = 126.36 × 70.97 - Step 4: Simplify right side
91.44x = 8,967.14 - Step 5: Solve for x
x = 8,967.14/91.44 - Step 6: Final answer
x = 98.07
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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.