Finding the Fourth Proportional to 689.93, 952.07 and 395.18
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Solution
The fourth proportional to 689.93, 952.07 and 395.18 is: 545.32
Step by Step Solution
- Step 1: Write the proportion equation
689.93 : 952.07 = 395.18 : x - Step 2: Convert to fraction form
689.93/952.07 = 395.18/x - Step 3: Cross multiply
689.93x = 952.07 × 395.18 - Step 4: Simplify right side
689.93x = 376,232.29 - Step 5: Solve for x
x = 376,232.29/689.93 - Step 6: Final answer
x = 545.32
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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.