Finding the Fourth Proportional to 579.74, 869.60 and 140.99
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Solution
The fourth proportional to 579.74, 869.60 and 140.99 is: 211.49
Step by Step Solution
- Step 1: Write the proportion equation
579.74 : 869.60 = 140.99 : x - Step 2: Convert to fraction form
579.74/869.60 = 140.99/x - Step 3: Cross multiply
579.74x = 869.60 × 140.99 - Step 4: Simplify right side
579.74x = 122,607.08 - Step 5: Solve for x
x = 122,607.08/579.74 - Step 6: Final answer
x = 211.49
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Similar ratio
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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.