Finding the Fourth Proportional to 134.20, 201.30 and 119.80
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Solution
The fourth proportional to 134.20, 201.30 and 119.80 is: 179.70
Step by Step Solution
- Step 1: Write the proportion equation
134.20 : 201.30 = 119.80 : x - Step 2: Convert to fraction form
134.20/201.30 = 119.80/x - Step 3: Cross multiply
134.20x = 201.30 × 119.80 - Step 4: Simplify right side
134.20x = 24,115.74 - Step 5: Solve for x
x = 24,115.74/134.20 - Step 6: Final answer
x = 179.70
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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.