Finding the Fourth Proportional to 292.76, 438.99 and 87.28
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Solution
The fourth proportional to 292.76, 438.99 and 87.28 is: 130.87
Step by Step Solution
- Step 1: Write the proportion equation
292.76 : 438.99 = 87.28 : x - Step 2: Convert to fraction form
292.76/438.99 = 87.28/x - Step 3: Cross multiply
292.76x = 438.99 × 87.28 - Step 4: Simplify right side
292.76x = 38,313.62 - Step 5: Solve for x
x = 38,313.62/292.76 - Step 6: Final answer
x = 130.87
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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.