Finding the Fourth Proportional to 292.70, 438.68 and 119.17
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Solution
The fourth proportional to 292.70, 438.68 and 119.17 is: 178.60
Step by Step Solution
- Step 1: Write the proportion equation
292.70 : 438.68 = 119.17 : x - Step 2: Convert to fraction form
292.70/438.68 = 119.17/x - Step 3: Cross multiply
292.70x = 438.68 × 119.17 - Step 4: Simplify right side
292.70x = 52,277.20 - Step 5: Solve for x
x = 52,277.20/292.70 - Step 6: Final answer
x = 178.60
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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.