Finding the Fourth Proportional to 80.44, 110.84 and 77.63
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Solution
The fourth proportional to 80.44, 110.84 and 77.63 is: 106.95
Step by Step Solution
- Step 1: Write the proportion equation
80.44 : 110.84 = 77.63 : x - Step 2: Convert to fraction form
80.44/110.84 = 77.63/x - Step 3: Cross multiply
80.44x = 110.84 × 77.63 - Step 4: Simplify right side
80.44x = 8,603.57 - Step 5: Solve for x
x = 8,603.57/80.44 - Step 6: Final answer
x = 106.95
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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.