Finding the Fourth Proportional to 118.99, 178.44 and 70.75
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Solution
The fourth proportional to 118.99, 178.44 and 70.75 is: 106.10
Step by Step Solution
- Step 1: Write the proportion equation
118.99 : 178.44 = 70.75 : x - Step 2: Convert to fraction form
118.99/178.44 = 70.75/x - Step 3: Cross multiply
118.99x = 178.44 × 70.75 - Step 4: Simplify right side
118.99x = 12,624.63 - Step 5: Solve for x
x = 12,624.63/118.99 - Step 6: Final answer
x = 106.10
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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.