Finding the Fourth Proportional to 690, 952.19 and 395.26
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Solution
The fourth proportional to 690, 952.19 and 395.26 is: 545.45
Step by Step Solution
- Step 1: Write the proportion equation
690 : 952.19 = 395.26 : x - Step 2: Convert to fraction form
690/952.19 = 395.26/x - Step 3: Cross multiply
690x = 952.19 × 395.26 - Step 4: Simplify right side
690x = 376,362.62 - Step 5: Solve for x
x = 376,362.62/690 - Step 6: Final answer
x = 545.45
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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.