Finding the Fourth Proportional to 290.99, 402.08 and 207.95
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Solution
The fourth proportional to 290.99, 402.08 and 207.95 is: 287.33
Step by Step Solution
- Step 1: Write the proportion equation
290.99 : 402.08 = 207.95 : x - Step 2: Convert to fraction form
290.99/402.08 = 207.95/x - Step 3: Cross multiply
290.99x = 402.08 × 207.95 - Step 4: Simplify right side
290.99x = 83,609.49 - Step 5: Solve for x
x = 83,609.49/290.99 - Step 6: Final answer
x = 287.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.