Finding the Fourth Proportional to 315.35, 435.19 and 190.99
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Solution
The fourth proportional to 315.35, 435.19 and 190.99 is: 263.57
Step by Step Solution
- Step 1: Write the proportion equation
315.35 : 435.19 = 190.99 : x - Step 2: Convert to fraction form
315.35/435.19 = 190.99/x - Step 3: Cross multiply
315.35x = 435.19 × 190.99 - Step 4: Simplify right side
315.35x = 83,116.94 - Step 5: Solve for x
x = 83,116.94/315.35 - Step 6: Final answer
x = 263.57
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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.