Finding the Fourth Proportional to 213.13, 294.12 and 121.13
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Solution
The fourth proportional to 213.13, 294.12 and 121.13 is: 167.15
Step by Step Solution
- Step 1: Write the proportion equation
213.13 : 294.12 = 121.13 : x - Step 2: Convert to fraction form
213.13/294.12 = 121.13/x - Step 3: Cross multiply
213.13x = 294.12 × 121.13 - Step 4: Simplify right side
213.13x = 35,624.68 - Step 5: Solve for x
x = 35,624.68/213.13 - Step 6: Final answer
x = 167.15
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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.