Finding the Fourth Proportional to 213.77, 320.45 and 110.99
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Solution
The fourth proportional to 213.77, 320.45 and 110.99 is: 166.38
Step by Step Solution
- Step 1: Write the proportion equation
213.77 : 320.45 = 110.99 : x - Step 2: Convert to fraction form
213.77/320.45 = 110.99/x - Step 3: Cross multiply
213.77x = 320.45 × 110.99 - Step 4: Simplify right side
213.77x = 35,566.99 - Step 5: Solve for x
x = 35,566.99/213.77 - Step 6: Final answer
x = 166.38
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.