Finding the Fourth Proportional to 292.69, 438.91 and 155.70
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Solution
The fourth proportional to 292.69, 438.91 and 155.70 is: 233.48
Step by Step Solution
- Step 1: Write the proportion equation
292.69 : 438.91 = 155.70 : x - Step 2: Convert to fraction form
292.69/438.91 = 155.70/x - Step 3: Cross multiply
292.69x = 438.91 × 155.70 - Step 4: Simplify right side
292.69x = 68,338.29 - Step 5: Solve for x
x = 68,338.29/292.69 - Step 6: Final answer
x = 233.48
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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.