Finding the Fourth Proportional to 92.76, 127.65 and 84.99
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Solution
The fourth proportional to 92.76, 127.65 and 84.99 is: 116.96
Step by Step Solution
- Step 1: Write the proportion equation
92.76 : 127.65 = 84.99 : x - Step 2: Convert to fraction form
92.76/127.65 = 84.99/x - Step 3: Cross multiply
92.76x = 127.65 × 84.99 - Step 4: Simplify right side
92.76x = 10,848.97 - Step 5: Solve for x
x = 10,848.97/92.76 - Step 6: Final answer
x = 116.96
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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.