Finding the Fourth Proportional to 579.99, 868.42 and 347.79
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Solution
The fourth proportional to 579.99, 868.42 and 347.79 is: 520.75
Step by Step Solution
- Step 1: Write the proportion equation
579.99 : 868.42 = 347.79 : x - Step 2: Convert to fraction form
579.99/868.42 = 347.79/x - Step 3: Cross multiply
579.99x = 868.42 × 347.79 - Step 4: Simplify right side
579.99x = 302,027.79 - Step 5: Solve for x
x = 302,027.79/579.99 - Step 6: Final answer
x = 520.75
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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.