Finding the Fourth Proportional to 140.26, 209.38 and 130.99
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Solution
The fourth proportional to 140.26, 209.38 and 130.99 is: 195.55
Step by Step Solution
- Step 1: Write the proportion equation
140.26 : 209.38 = 130.99 : x - Step 2: Convert to fraction form
140.26/209.38 = 130.99/x - Step 3: Cross multiply
140.26x = 209.38 × 130.99 - Step 4: Simplify right side
140.26x = 27,427.11 - Step 5: Solve for x
x = 27,427.11/140.26 - Step 6: Final answer
x = 195.55
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.