Finding the Fourth Proportional to 163.73, 245.63 and 91.44
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Solution
The fourth proportional to 163.73, 245.63 and 91.44 is: 137.18
Step by Step Solution
- Step 1: Write the proportion equation
163.73 : 245.63 = 91.44 : x - Step 2: Convert to fraction form
163.73/245.63 = 91.44/x - Step 3: Cross multiply
163.73x = 245.63 × 91.44 - Step 4: Simplify right side
163.73x = 22,460.41 - Step 5: Solve for x
x = 22,460.41/163.73 - Step 6: Final answer
x = 137.18
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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.