Finding the Fourth Proportional to 190.91, 263.40 and 107.99
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Solution
The fourth proportional to 190.91, 263.40 and 107.99 is: 148.99
Step by Step Solution
- Step 1: Write the proportion equation
190.91 : 263.40 = 107.99 : x - Step 2: Convert to fraction form
190.91/263.40 = 107.99/x - Step 3: Cross multiply
190.91x = 263.40 × 107.99 - Step 4: Simplify right side
190.91x = 28,443.25 - Step 5: Solve for x
x = 28,443.25/190.91 - Step 6: Final answer
x = 148.99
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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.