Finding the Fourth Proportional to 163.40, 244.98 and 81.14
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Solution
The fourth proportional to 163.40, 244.98 and 81.14 is: 121.65
Step by Step Solution
- Step 1: Write the proportion equation
163.40 : 244.98 = 81.14 : x - Step 2: Convert to fraction form
163.40/244.98 = 81.14/x - Step 3: Cross multiply
163.40x = 244.98 × 81.14 - Step 4: Simplify right side
163.40x = 19,877.68 - Step 5: Solve for x
x = 19,877.68/163.40 - Step 6: Final answer
x = 121.65
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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.