Finding the Fourth Proportional to 76.56, 114.88 and 35.98
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Solution
The fourth proportional to 76.56, 114.88 and 35.98 is: 53.99
Step by Step Solution
- Step 1: Write the proportion equation
76.56 : 114.88 = 35.98 : x - Step 2: Convert to fraction form
76.56/114.88 = 35.98/x - Step 3: Cross multiply
76.56x = 114.88 × 35.98 - Step 4: Simplify right side
76.56x = 4,133.38 - Step 5: Solve for x
x = 4,133.38/76.56 - Step 6: Final answer
x = 53.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.