Finding the Fourth Proportional to 1,259.68, 1,889.57 and 394
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Solution
The fourth proportional to 1,259.68, 1,889.57 and 394 is: 591.02
Step by Step Solution
- Step 1: Write the proportion equation
1,259.68 : 1,889.57 = 394 : x - Step 2: Convert to fraction form
1,259.68/1,889.57 = 394/x - Step 3: Cross multiply
1,259.68x = 1,889.57 × 394 - Step 4: Simplify right side
1,259.68x = 744,490.58 - Step 5: Solve for x
x = 744,490.58/1,259.68 - Step 6: Final answer
x = 591.02
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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.