Finding the Fourth Proportional to 165.21, 247.26 and 161.70
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Solution
The fourth proportional to 165.21, 247.26 and 161.70 is: 242.01
Step by Step Solution
- Step 1: Write the proportion equation
165.21 : 247.26 = 161.70 : x - Step 2: Convert to fraction form
165.21/247.26 = 161.70/x - Step 3: Cross multiply
165.21x = 247.26 × 161.70 - Step 4: Simplify right side
165.21x = 39,981.94 - Step 5: Solve for x
x = 39,981.94/165.21 - Step 6: Final answer
x = 242.01
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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.