Finding the Fourth Proportional to 112.38, 168.59 and 60.99
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Solution
The fourth proportional to 112.38, 168.59 and 60.99 is: 91.50
Step by Step Solution
- Step 1: Write the proportion equation
112.38 : 168.59 = 60.99 : x - Step 2: Convert to fraction form
112.38/168.59 = 60.99/x - Step 3: Cross multiply
112.38x = 168.59 × 60.99 - Step 4: Simplify right side
112.38x = 10,282.30 - Step 5: Solve for x
x = 10,282.30/112.38 - Step 6: Final answer
x = 91.50
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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.