Finding the Fourth Proportional to 290.70, 435.99 and 256.95
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Solution
The fourth proportional to 290.70, 435.99 and 256.95 is: 385.37
Step by Step Solution
- Step 1: Write the proportion equation
290.70 : 435.99 = 256.95 : x - Step 2: Convert to fraction form
290.70/435.99 = 256.95/x - Step 3: Cross multiply
290.70x = 435.99 × 256.95 - Step 4: Simplify right side
290.70x = 112,027.63 - Step 5: Solve for x
x = 112,027.63/290.70 - Step 6: Final answer
x = 385.37
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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.