Finding the Fourth Proportional to 50.36, 69.50 and 30.94
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Solution
The fourth proportional to 50.36, 69.50 and 30.94 is: 42.70
Step by Step Solution
- Step 1: Write the proportion equation
50.36 : 69.50 = 30.94 : x - Step 2: Convert to fraction form
50.36/69.50 = 30.94/x - Step 3: Cross multiply
50.36x = 69.50 × 30.94 - Step 4: Simplify right side
50.36x = 2,150.23 - Step 5: Solve for x
x = 2,150.23/50.36 - Step 6: Final answer
x = 42.70
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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.