Finding the Fourth Proportional to 77.70, 107.21 and 44.93
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Solution
The fourth proportional to 77.70, 107.21 and 44.93 is: 61.99
Step by Step Solution
- Step 1: Write the proportion equation
77.70 : 107.21 = 44.93 : x - Step 2: Convert to fraction form
77.70/107.21 = 44.93/x - Step 3: Cross multiply
77.70x = 107.21 × 44.93 - Step 4: Simplify right side
77.70x = 4,816.92 - Step 5: Solve for x
x = 4,816.92/77.70 - Step 6: Final answer
x = 61.99
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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.