Finding the Fourth Proportional to 210.03, 315.07 and 79.99
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Solution
The fourth proportional to 210.03, 315.07 and 79.99 is: 119.99
Step by Step Solution
- Step 1: Write the proportion equation
210.03 : 315.07 = 79.99 : x - Step 2: Convert to fraction form
210.03/315.07 = 79.99/x - Step 3: Cross multiply
210.03x = 315.07 × 79.99 - Step 4: Simplify right side
210.03x = 25,202.45 - Step 5: Solve for x
x = 25,202.45/210.03 - Step 6: Final answer
x = 119.99
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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.