Finding the Fourth Proportional to 129.29, 177.46 and 126.99
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Solution
The fourth proportional to 129.29, 177.46 and 126.99 is: 174.31
Step by Step Solution
- Step 1: Write the proportion equation
129.29 : 177.46 = 126.99 : x - Step 2: Convert to fraction form
129.29/177.46 = 126.99/x - Step 3: Cross multiply
129.29x = 177.46 × 126.99 - Step 4: Simplify right side
129.29x = 22,535.33 - Step 5: Solve for x
x = 22,535.33/129.29 - Step 6: Final answer
x = 174.31
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.