Finding the Fourth Proportional to 118.19, 176.99 and 77.69
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Solution
The fourth proportional to 118.19, 176.99 and 77.69 is: 116.34
Step by Step Solution
- Step 1: Write the proportion equation
118.19 : 176.99 = 77.69 : x - Step 2: Convert to fraction form
118.19/176.99 = 77.69/x - Step 3: Cross multiply
118.19x = 176.99 × 77.69 - Step 4: Simplify right side
118.19x = 13,750.41 - Step 5: Solve for x
x = 13,750.41/118.19 - Step 6: Final answer
x = 116.34
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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.