Finding the Fourth Proportional to 133.19, 199.99 and 107.45
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Solution
The fourth proportional to 133.19, 199.99 and 107.45 is: 161.34
Step by Step Solution
- Step 1: Write the proportion equation
133.19 : 199.99 = 107.45 : x - Step 2: Convert to fraction form
133.19/199.99 = 107.45/x - Step 3: Cross multiply
133.19x = 199.99 × 107.45 - Step 4: Simplify right side
133.19x = 21,489.67 - Step 5: Solve for x
x = 21,489.67/133.19 - Step 6: Final answer
x = 161.34
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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.