Finding the Fourth Proportional to 92.17, 137.99 and 84.99
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Solution
The fourth proportional to 92.17, 137.99 and 84.99 is: 127.24
Step by Step Solution
- Step 1: Write the proportion equation
92.17 : 137.99 = 84.99 : x - Step 2: Convert to fraction form
92.17/137.99 = 84.99/x - Step 3: Cross multiply
92.17x = 137.99 × 84.99 - Step 4: Simplify right side
92.17x = 11,727.35 - Step 5: Solve for x
x = 11,727.35/92.17 - Step 6: Final answer
x = 127.24
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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.