Finding the Fourth Proportional to 409.93, 614.76 and 135.96
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Solution
The fourth proportional to 409.93, 614.76 and 135.96 is: 203.90
Step by Step Solution
- Step 1: Write the proportion equation
409.93 : 614.76 = 135.96 : x - Step 2: Convert to fraction form
409.93/614.76 = 135.96/x - Step 3: Cross multiply
409.93x = 614.76 × 135.96 - Step 4: Simplify right side
409.93x = 83,584.65 - Step 5: Solve for x
x = 83,584.65/409.93 - Step 6: Final answer
x = 203.90
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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.