Finding the Fourth Proportional to 192.91, 289.43 and 84.68
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Solution
The fourth proportional to 192.91, 289.43 and 84.68 is: 127.05
Step by Step Solution
- Step 1: Write the proportion equation
192.91 : 289.43 = 84.68 : x - Step 2: Convert to fraction form
192.91/289.43 = 84.68/x - Step 3: Cross multiply
192.91x = 289.43 × 84.68 - Step 4: Simplify right side
192.91x = 24,508.93 - Step 5: Solve for x
x = 24,508.93/192.91 - Step 6: Final answer
x = 127.05
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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.