Finding the Fourth Proportional to 1,200.99, 1,801.58 and 379.31
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Solution
The fourth proportional to 1,200.99, 1,801.58 and 379.31 is: 568.99
Step by Step Solution
- Step 1: Write the proportion equation
1,200.99 : 1,801.58 = 379.31 : x - Step 2: Convert to fraction form
1,200.99/1,801.58 = 379.31/x - Step 3: Cross multiply
1,200.99x = 1,801.58 × 379.31 - Step 4: Simplify right side
1,200.99x = 683,346.41 - Step 5: Solve for x
x = 683,346.41/1,200.99 - Step 6: Final answer
x = 568.99
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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.