Finding the Fourth Proportional to 199.93, 299.79 and 91.63
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Solution
The fourth proportional to 199.93, 299.79 and 91.63 is: 137.39
Step by Step Solution
- Step 1: Write the proportion equation
199.93 : 299.79 = 91.63 : x - Step 2: Convert to fraction form
199.93/299.79 = 91.63/x - Step 3: Cross multiply
199.93x = 299.79 × 91.63 - Step 4: Simplify right side
199.93x = 27,468.26 - Step 5: Solve for x
x = 27,468.26/199.93 - Step 6: Final answer
x = 137.39
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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.