Finding the Fourth Proportional to 338.87, 508.35 and 107.79
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Solution
The fourth proportional to 338.87, 508.35 and 107.79 is: 161.70
Step by Step Solution
- Step 1: Write the proportion equation
338.87 : 508.35 = 107.79 : x - Step 2: Convert to fraction form
338.87/508.35 = 107.79/x - Step 3: Cross multiply
338.87x = 508.35 × 107.79 - Step 4: Simplify right side
338.87x = 54,795.05 - Step 5: Solve for x
x = 54,795.05/338.87 - Step 6: Final answer
x = 161.70
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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.