Finding the Fourth Proportional to 163.14, 224.94 and 121.56
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Solution
The fourth proportional to 163.14, 224.94 and 121.56 is: 167.61
Step by Step Solution
- Step 1: Write the proportion equation
163.14 : 224.94 = 121.56 : x - Step 2: Convert to fraction form
163.14/224.94 = 121.56/x - Step 3: Cross multiply
163.14x = 224.94 × 121.56 - Step 4: Simplify right side
163.14x = 27,343.71 - Step 5: Solve for x
x = 27,343.71/163.14 - Step 6: Final answer
x = 167.61
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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.