Finding the Fourth Proportional to 133.68, 200.64 and 79.62
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Solution
The fourth proportional to 133.68, 200.64 and 79.62 is: 119.50
Step by Step Solution
- Step 1: Write the proportion equation
133.68 : 200.64 = 79.62 : x - Step 2: Convert to fraction form
133.68/200.64 = 79.62/x - Step 3: Cross multiply
133.68x = 200.64 × 79.62 - Step 4: Simplify right side
133.68x = 15,974.96 - Step 5: Solve for x
x = 15,974.96/133.68 - Step 6: Final answer
x = 119.50
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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.