Finding the Fourth Proportional to 210.99, 316.36 and 73.99
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Solution
The fourth proportional to 210.99, 316.36 and 73.99 is: 110.94
Step by Step Solution
- Step 1: Write the proportion equation
210.99 : 316.36 = 73.99 : x - Step 2: Convert to fraction form
210.99/316.36 = 73.99/x - Step 3: Cross multiply
210.99x = 316.36 × 73.99 - Step 4: Simplify right side
210.99x = 23,407.48 - Step 5: Solve for x
x = 23,407.48/210.99 - Step 6: Final answer
x = 110.94
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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.