Finding the Fourth Proportional to 161.42, 241.91 and 69.99
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Solution
The fourth proportional to 161.42, 241.91 and 69.99 is: 104.89
Step by Step Solution
- Step 1: Write the proportion equation
161.42 : 241.91 = 69.99 : x - Step 2: Convert to fraction form
161.42/241.91 = 69.99/x - Step 3: Cross multiply
161.42x = 241.91 × 69.99 - Step 4: Simplify right side
161.42x = 16,931.28 - Step 5: Solve for x
x = 16,931.28/161.42 - Step 6: Final answer
x = 104.89
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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.