Finding the Fourth Proportional to 412.97, 619.67 and 290.99
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Solution
The fourth proportional to 412.97, 619.67 and 290.99 is: 436.64
Step by Step Solution
- Step 1: Write the proportion equation
412.97 : 619.67 = 290.99 : x - Step 2: Convert to fraction form
412.97/619.67 = 290.99/x - Step 3: Cross multiply
412.97x = 619.67 × 290.99 - Step 4: Simplify right side
412.97x = 180,317.77 - Step 5: Solve for x
x = 180,317.77/412.97 - Step 6: Final answer
x = 436.64
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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.