Finding the Fourth Proportional to 163.13, 224.77 and 121.67
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Solution
The fourth proportional to 163.13, 224.77 and 121.67 is: 167.63
Step by Step Solution
- Step 1: Write the proportion equation
163.13 : 224.77 = 121.67 : x - Step 2: Convert to fraction form
163.13/224.77 = 121.67/x - Step 3: Cross multiply
163.13x = 224.77 × 121.67 - Step 4: Simplify right side
163.13x = 27,346.03 - Step 5: Solve for x
x = 27,346.03/163.13 - Step 6: Final answer
x = 167.63
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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.