Finding the Fourth Proportional to 1,123.83, 1,551 and 957.99
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Solution
The fourth proportional to 1,123.83, 1,551 and 957.99 is: 1,322.12
Step by Step Solution
- Step 1: Write the proportion equation
1,123.83 : 1,551 = 957.99 : x - Step 2: Convert to fraction form
1,123.83/1,551 = 957.99/x - Step 3: Cross multiply
1,123.83x = 1,551 × 957.99 - Step 4: Simplify right side
1,123.83x = 1,485,842.49 - Step 5: Solve for x
x = 1,485,842.49/1,123.83 - Step 6: Final answer
x = 1,322.12
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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.