Finding the Fourth Proportional to 939.24, 1,296 and 589.68
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Solution
The fourth proportional to 939.24, 1,296 and 589.68 is: 813.66
Step by Step Solution
- Step 1: Write the proportion equation
939.24 : 1,296 = 589.68 : x - Step 2: Convert to fraction form
939.24/1,296 = 589.68/x - Step 3: Cross multiply
939.24x = 1,296 × 589.68 - Step 4: Simplify right side
939.24x = 764,225.28 - Step 5: Solve for x
x = 764,225.28/939.24 - Step 6: Final answer
x = 813.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.