Finding the Fourth Proportional to 210.24, 315.36 and 63.99
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Solution
The fourth proportional to 210.24, 315.36 and 63.99 is: 95.99
Step by Step Solution
- Step 1: Write the proportion equation
210.24 : 315.36 = 63.99 : x - Step 2: Convert to fraction form
210.24/315.36 = 63.99/x - Step 3: Cross multiply
210.24x = 315.36 × 63.99 - Step 4: Simplify right side
210.24x = 20,179.89 - Step 5: Solve for x
x = 20,179.89/210.24 - Step 6: Final answer
x = 95.99
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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.