Finding the Fourth Proportional to 79.93, 119.99 and 76.69
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Solution
The fourth proportional to 79.93, 119.99 and 76.69 is: 115.12
Step by Step Solution
- Step 1: Write the proportion equation
79.93 : 119.99 = 76.69 : x - Step 2: Convert to fraction form
79.93/119.99 = 76.69/x - Step 3: Cross multiply
79.93x = 119.99 × 76.69 - Step 4: Simplify right side
79.93x = 9,201.65 - Step 5: Solve for x
x = 9,201.65/79.93 - Step 6: Final answer
x = 115.12
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.