Finding the Fourth Proportional to 92.81, 128.12 and 60.09
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Solution
The fourth proportional to 92.81, 128.12 and 60.09 is: 82.95
Step by Step Solution
- Step 1: Write the proportion equation
92.81 : 128.12 = 60.09 : x - Step 2: Convert to fraction form
92.81/128.12 = 60.09/x - Step 3: Cross multiply
92.81x = 128.12 × 60.09 - Step 4: Simplify right side
92.81x = 7,698.43 - Step 5: Solve for x
x = 7,698.43/92.81 - Step 6: Final answer
x = 82.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.