Finding the Fourth Proportional to 35.82, 49.40 and 21.99
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Solution
The fourth proportional to 35.82, 49.40 and 21.99 is: 30.33
Step by Step Solution
- Step 1: Write the proportion equation
35.82 : 49.40 = 21.99 : x - Step 2: Convert to fraction form
35.82/49.40 = 21.99/x - Step 3: Cross multiply
35.82x = 49.40 × 21.99 - Step 4: Simplify right side
35.82x = 1,086.31 - Step 5: Solve for x
x = 1,086.31/35.82 - Step 6: Final answer
x = 30.33
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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.