Finding the Fourth Proportional to 192.79, 288.99 and 89.99
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Solution
The fourth proportional to 192.79, 288.99 and 89.99 is: 134.89
Step by Step Solution
- Step 1: Write the proportion equation
192.79 : 288.99 = 89.99 : x - Step 2: Convert to fraction form
192.79/288.99 = 89.99/x - Step 3: Cross multiply
192.79x = 288.99 × 89.99 - Step 4: Simplify right side
192.79x = 26,005.76 - Step 5: Solve for x
x = 26,005.76/192.79 - Step 6: Final answer
x = 134.89
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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.