Finding the Fourth Proportional to 218.26, 301.14 and 129.73
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Solution
The fourth proportional to 218.26, 301.14 and 129.73 is: 178.99
Step by Step Solution
- Step 1: Write the proportion equation
218.26 : 301.14 = 129.73 : x - Step 2: Convert to fraction form
218.26/301.14 = 129.73/x - Step 3: Cross multiply
218.26x = 301.14 × 129.73 - Step 4: Simplify right side
218.26x = 39,066.24 - Step 5: Solve for x
x = 39,066.24/218.26 - Step 6: Final answer
x = 178.99
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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.