Finding the Fourth Proportional to 83.68, 115.50 and 50.95
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Solution
The fourth proportional to 83.68, 115.50 and 50.95 is: 70.32
Step by Step Solution
- Step 1: Write the proportion equation
83.68 : 115.50 = 50.95 : x - Step 2: Convert to fraction form
83.68/115.50 = 50.95/x - Step 3: Cross multiply
83.68x = 115.50 × 50.95 - Step 4: Simplify right side
83.68x = 5,884.73 - Step 5: Solve for x
x = 5,884.73/83.68 - Step 6: Final answer
x = 70.32
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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.