Finding the Fourth Proportional to 192.95, 289.50 and 71.31
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Solution
The fourth proportional to 192.95, 289.50 and 71.31 is: 106.99
Step by Step Solution
- Step 1: Write the proportion equation
192.95 : 289.50 = 71.31 : x - Step 2: Convert to fraction form
192.95/289.50 = 71.31/x - Step 3: Cross multiply
192.95x = 289.50 × 71.31 - Step 4: Simplify right side
192.95x = 20,643.89 - Step 5: Solve for x
x = 20,643.89/192.95 - Step 6: Final answer
x = 106.99
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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.