Finding the Fourth Proportional to 349.20, 523.79 and 161.55
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Solution
The fourth proportional to 349.20, 523.79 and 161.55 is: 242.32
Step by Step Solution
- Step 1: Write the proportion equation
349.20 : 523.79 = 161.55 : x - Step 2: Convert to fraction form
349.20/523.79 = 161.55/x - Step 3: Cross multiply
349.20x = 523.79 × 161.55 - Step 4: Simplify right side
349.20x = 84,617.47 - Step 5: Solve for x
x = 84,617.47/349.20 - Step 6: Final answer
x = 242.32
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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.