Finding the Fourth Proportional to 80.40, 110.99 and 59.68
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Solution
The fourth proportional to 80.40, 110.99 and 59.68 is: 82.39
Step by Step Solution
- Step 1: Write the proportion equation
80.40 : 110.99 = 59.68 : x - Step 2: Convert to fraction form
80.40/110.99 = 59.68/x - Step 3: Cross multiply
80.40x = 110.99 × 59.68 - Step 4: Simplify right side
80.40x = 6,623.88 - Step 5: Solve for x
x = 6,623.88/80.40 - Step 6: Final answer
x = 82.39
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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.