Finding the Fourth Proportional to 27.99, 41.99 and 18.99
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Solution
The fourth proportional to 27.99, 41.99 and 18.99 is: 28.49
Step by Step Solution
- Step 1: Write the proportion equation
27.99 : 41.99 = 18.99 : x - Step 2: Convert to fraction form
27.99/41.99 = 18.99/x - Step 3: Cross multiply
27.99x = 41.99 × 18.99 - Step 4: Simplify right side
27.99x = 797.39 - Step 5: Solve for x
x = 797.39/27.99 - Step 6: Final answer
x = 28.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.