Finding the Fourth Proportional to 192.19, 288.28 and 76.68
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Solution
The fourth proportional to 192.19, 288.28 and 76.68 is: 115.03
Step by Step Solution
- Step 1: Write the proportion equation
192.19 : 288.28 = 76.68 : x - Step 2: Convert to fraction form
192.19/288.28 = 76.68/x - Step 3: Cross multiply
192.19x = 288.28 × 76.68 - Step 4: Simplify right side
192.19x = 22,106.49 - Step 5: Solve for x
x = 22,106.49/192.19 - Step 6: Final answer
x = 115.03
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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.