Finding the Fourth Proportional to 210.64, 315.99 and 107.99
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Solution
The fourth proportional to 210.64, 315.99 and 107.99 is: 162.00
Step by Step Solution
- Step 1: Write the proportion equation
210.64 : 315.99 = 107.99 : x - Step 2: Convert to fraction form
210.64/315.99 = 107.99/x - Step 3: Cross multiply
210.64x = 315.99 × 107.99 - Step 4: Simplify right side
210.64x = 34,123.76 - Step 5: Solve for x
x = 34,123.76/210.64 - Step 6: Final answer
x = 162.00
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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.