Finding the Fourth Proportional to 80.46, 120.56 and 59.99
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Solution
The fourth proportional to 80.46, 120.56 and 59.99 is: 89.88
Step by Step Solution
- Step 1: Write the proportion equation
80.46 : 120.56 = 59.99 : x - Step 2: Convert to fraction form
80.46/120.56 = 59.99/x - Step 3: Cross multiply
80.46x = 120.56 × 59.99 - Step 4: Simplify right side
80.46x = 7,231.49 - Step 5: Solve for x
x = 7,231.49/80.46 - Step 6: Final answer
x = 89.88
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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.