Finding the Fourth Proportional to 80.84, 120.97 and 68.96
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Solution
The fourth proportional to 80.84, 120.97 and 68.96 is: 103.19
Step by Step Solution
- Step 1: Write the proportion equation
80.84 : 120.97 = 68.96 : x - Step 2: Convert to fraction form
80.84/120.97 = 68.96/x - Step 3: Cross multiply
80.84x = 120.97 × 68.96 - Step 4: Simplify right side
80.84x = 8,341.14 - Step 5: Solve for x
x = 8,341.14/80.84 - Step 6: Final answer
x = 103.19
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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.