Finding the Fourth Proportional to 213.24, 294.08 and 154.21
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Solution
The fourth proportional to 213.24, 294.08 and 154.21 is: 212.67
Step by Step Solution
- Step 1: Write the proportion equation
213.24 : 294.08 = 154.21 : x - Step 2: Convert to fraction form
213.24/294.08 = 154.21/x - Step 3: Cross multiply
213.24x = 294.08 × 154.21 - Step 4: Simplify right side
213.24x = 45,350.08 - Step 5: Solve for x
x = 45,350.08/213.24 - Step 6: Final answer
x = 212.67
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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.