Finding the Fourth Proportional to 218.97, 328.37 and 81.99
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Solution
The fourth proportional to 218.97, 328.37 and 81.99 is: 122.95
Step by Step Solution
- Step 1: Write the proportion equation
218.97 : 328.37 = 81.99 : x - Step 2: Convert to fraction form
218.97/328.37 = 81.99/x - Step 3: Cross multiply
218.97x = 328.37 × 81.99 - Step 4: Simplify right side
218.97x = 26,922.65 - Step 5: Solve for x
x = 26,922.65/218.97 - Step 6: Final answer
x = 122.95
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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.