Finding the Fourth Proportional to 899.13, 1,348.68 and 378.99
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Solution
The fourth proportional to 899.13, 1,348.68 and 378.99 is: 568.48
Step by Step Solution
- Step 1: Write the proportion equation
899.13 : 1,348.68 = 378.99 : x - Step 2: Convert to fraction form
899.13/1,348.68 = 378.99/x - Step 3: Cross multiply
899.13x = 1,348.68 × 378.99 - Step 4: Simplify right side
899.13x = 511,136.23 - Step 5: Solve for x
x = 511,136.23/899.13 - Step 6: Final answer
x = 568.48
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1.5x scale
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.