Finding the Fourth Proportional to 92.36, 138.26 and 73.99
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Solution
The fourth proportional to 92.36, 138.26 and 73.99 is: 110.76
Step by Step Solution
- Step 1: Write the proportion equation
92.36 : 138.26 = 73.99 : x - Step 2: Convert to fraction form
92.36/138.26 = 73.99/x - Step 3: Cross multiply
92.36x = 138.26 × 73.99 - Step 4: Simplify right side
92.36x = 10,229.80 - Step 5: Solve for x
x = 10,229.80/92.36 - Step 6: Final answer
x = 110.76
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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.