Finding the Fourth Proportional to 217.70, 325.99 and 130.94
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Solution
The fourth proportional to 217.70, 325.99 and 130.94 is: 196.07
Step by Step Solution
- Step 1: Write the proportion equation
217.70 : 325.99 = 130.94 : x - Step 2: Convert to fraction form
217.70/325.99 = 130.94/x - Step 3: Cross multiply
217.70x = 325.99 × 130.94 - Step 4: Simplify right side
217.70x = 42,685.13 - Step 5: Solve for x
x = 42,685.13/217.70 - Step 6: Final answer
x = 196.07
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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.