Finding the Fourth Proportional to 76.58, 114.62 and 58.19
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Solution
The fourth proportional to 76.58, 114.62 and 58.19 is: 87.09
Step by Step Solution
- Step 1: Write the proportion equation
76.58 : 114.62 = 58.19 : x - Step 2: Convert to fraction form
76.58/114.62 = 58.19/x - Step 3: Cross multiply
76.58x = 114.62 × 58.19 - Step 4: Simplify right side
76.58x = 6,668.87 - Step 5: Solve for x
x = 6,668.87/76.58 - Step 6: Final answer
x = 87.09
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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.