Finding the Fourth Proportional to 79.30, 118.87 and 40.69
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Solution
The fourth proportional to 79.30, 118.87 and 40.69 is: 60.99
Step by Step Solution
- Step 1: Write the proportion equation
79.30 : 118.87 = 40.69 : x - Step 2: Convert to fraction form
79.30/118.87 = 40.69/x - Step 3: Cross multiply
79.30x = 118.87 × 40.69 - Step 4: Simplify right side
79.30x = 4,836.82 - Step 5: Solve for x
x = 4,836.82/79.30 - Step 6: Final answer
x = 60.99
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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.