Finding the Fourth Proportional to 80.44, 110.94 and 70.68
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Solution
The fourth proportional to 80.44, 110.94 and 70.68 is: 97.48
Step by Step Solution
- Step 1: Write the proportion equation
80.44 : 110.94 = 70.68 : x - Step 2: Convert to fraction form
80.44/110.94 = 70.68/x - Step 3: Cross multiply
80.44x = 110.94 × 70.68 - Step 4: Simplify right side
80.44x = 7,841.24 - Step 5: Solve for x
x = 7,841.24/80.44 - Step 6: Final answer
x = 97.48
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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.