Finding the Fourth Proportional to 355.26, 532.94 and 138.99
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Solution
The fourth proportional to 355.26, 532.94 and 138.99 is: 208.50
Step by Step Solution
- Step 1: Write the proportion equation
355.26 : 532.94 = 138.99 : x - Step 2: Convert to fraction form
355.26/532.94 = 138.99/x - Step 3: Cross multiply
355.26x = 532.94 × 138.99 - Step 4: Simplify right side
355.26x = 74,072.64 - Step 5: Solve for x
x = 74,072.64/355.26 - Step 6: Final answer
x = 208.50
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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.