Finding the Fourth Proportional to 192.79, 288.99 and 70.99
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Solution
The fourth proportional to 192.79, 288.99 and 70.99 is: 106.41
Step by Step Solution
- Step 1: Write the proportion equation
192.79 : 288.99 = 70.99 : x - Step 2: Convert to fraction form
192.79/288.99 = 70.99/x - Step 3: Cross multiply
192.79x = 288.99 × 70.99 - Step 4: Simplify right side
192.79x = 20,515.40 - Step 5: Solve for x
x = 20,515.40/192.79 - Step 6: Final answer
x = 106.41
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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.