Finding the Fourth Proportional to 927.43, 1,389.93 and 378.99
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Solution
The fourth proportional to 927.43, 1,389.93 and 378.99 is: 567.99
Step by Step Solution
- Step 1: Write the proportion equation
927.43 : 1,389.93 = 378.99 : x - Step 2: Convert to fraction form
927.43/1,389.93 = 378.99/x - Step 3: Cross multiply
927.43x = 1,389.93 × 378.99 - Step 4: Simplify right side
927.43x = 526,767.68 - Step 5: Solve for x
x = 526,767.68/927.43 - Step 6: Final answer
x = 567.99
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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.