Finding the Fourth Proportional to 213.90, 295.21 and 130.99
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Solution
The fourth proportional to 213.90, 295.21 and 130.99 is: 180.78
Step by Step Solution
- Step 1: Write the proportion equation
213.90 : 295.21 = 130.99 : x - Step 2: Convert to fraction form
213.90/295.21 = 130.99/x - Step 3: Cross multiply
213.90x = 295.21 × 130.99 - Step 4: Simplify right side
213.90x = 38,668.49 - Step 5: Solve for x
x = 38,668.49/213.90 - Step 6: Final answer
x = 180.78
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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.