Finding the Fourth Proportional to 76.30, 114.36 and 44.08
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Solution
The fourth proportional to 76.30, 114.36 and 44.08 is: 66.07
Step by Step Solution
- Step 1: Write the proportion equation
76.30 : 114.36 = 44.08 : x - Step 2: Convert to fraction form
76.30/114.36 = 44.08/x - Step 3: Cross multiply
76.30x = 114.36 × 44.08 - Step 4: Simplify right side
76.30x = 5,040.99 - Step 5: Solve for x
x = 5,040.99/76.30 - Step 6: Final answer
x = 66.07
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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.