Finding the Fourth Proportional to 80.09, 110.44 and 55.18
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Solution
The fourth proportional to 80.09, 110.44 and 55.18 is: 76.09
Step by Step Solution
- Step 1: Write the proportion equation
80.09 : 110.44 = 55.18 : x - Step 2: Convert to fraction form
80.09/110.44 = 55.18/x - Step 3: Cross multiply
80.09x = 110.44 × 55.18 - Step 4: Simplify right side
80.09x = 6,094.08 - Step 5: Solve for x
x = 6,094.08/80.09 - Step 6: Final answer
x = 76.09
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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.