Finding the Fourth Proportional to 213.99, 321.05 and 83.99
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Solution
The fourth proportional to 213.99, 321.05 and 83.99 is: 126.00
Step by Step Solution
- Step 1: Write the proportion equation
213.99 : 321.05 = 83.99 : x - Step 2: Convert to fraction form
213.99/321.05 = 83.99/x - Step 3: Cross multiply
213.99x = 321.05 × 83.99 - Step 4: Simplify right side
213.99x = 26,963.59 - Step 5: Solve for x
x = 26,963.59/213.99 - Step 6: Final answer
x = 126.00
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.