Finding the Fourth Proportional to 213.13, 319.77 and 104.99
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Solution
The fourth proportional to 213.13, 319.77 and 104.99 is: 157.52
Step by Step Solution
- Step 1: Write the proportion equation
213.13 : 319.77 = 104.99 : x - Step 2: Convert to fraction form
213.13/319.77 = 104.99/x - Step 3: Cross multiply
213.13x = 319.77 × 104.99 - Step 4: Simplify right side
213.13x = 33,572.13 - Step 5: Solve for x
x = 33,572.13/213.13 - Step 6: Final answer
x = 157.52
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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.