Finding the Fourth Proportional to 561.99, 775.64 and 428.99
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Solution
The fourth proportional to 561.99, 775.64 and 428.99 is: 592.08
Step by Step Solution
- Step 1: Write the proportion equation
561.99 : 775.64 = 428.99 : x - Step 2: Convert to fraction form
561.99/775.64 = 428.99/x - Step 3: Cross multiply
561.99x = 775.64 × 428.99 - Step 4: Simplify right side
561.99x = 332,740.95 - Step 5: Solve for x
x = 332,740.95/561.99 - Step 6: Final answer
x = 592.08
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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.