Finding the Fourth Proportional to 77.44, 106.97 and 63.06
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Solution
The fourth proportional to 77.44, 106.97 and 63.06 is: 87.11
Step by Step Solution
- Step 1: Write the proportion equation
77.44 : 106.97 = 63.06 : x - Step 2: Convert to fraction form
77.44/106.97 = 63.06/x - Step 3: Cross multiply
77.44x = 106.97 × 63.06 - Step 4: Simplify right side
77.44x = 6,745.53 - Step 5: Solve for x
x = 6,745.53/77.44 - Step 6: Final answer
x = 87.11
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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.