Finding the Fourth Proportional to 690.56, 952.99 and 395.99
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Solution
The fourth proportional to 690.56, 952.99 and 395.99 is: 546.48
Step by Step Solution
- Step 1: Write the proportion equation
690.56 : 952.99 = 395.99 : x - Step 2: Convert to fraction form
690.56/952.99 = 395.99/x - Step 3: Cross multiply
690.56x = 952.99 × 395.99 - Step 4: Simplify right side
690.56x = 377,375.90 - Step 5: Solve for x
x = 377,375.90/690.56 - Step 6: Final answer
x = 546.48
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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.