Finding the Fourth Proportional to 163.28, 244.80 and 76.68
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Solution
The fourth proportional to 163.28, 244.80 and 76.68 is: 114.96
Step by Step Solution
- Step 1: Write the proportion equation
163.28 : 244.80 = 76.68 : x - Step 2: Convert to fraction form
163.28/244.80 = 76.68/x - Step 3: Cross multiply
163.28x = 244.80 × 76.68 - Step 4: Simplify right side
163.28x = 18,771.26 - Step 5: Solve for x
x = 18,771.26/163.28 - Step 6: Final answer
x = 114.96
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.