Finding the Fourth Proportional to 315.63, 473.09 and 193.95
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Solution
The fourth proportional to 315.63, 473.09 and 193.95 is: 290.70
Step by Step Solution
- Step 1: Write the proportion equation
315.63 : 473.09 = 193.95 : x - Step 2: Convert to fraction form
315.63/473.09 = 193.95/x - Step 3: Cross multiply
315.63x = 473.09 × 193.95 - Step 4: Simplify right side
315.63x = 91,754.84 - Step 5: Solve for x
x = 91,754.84/315.63 - Step 6: Final answer
x = 290.70
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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.