Finding the Fourth Proportional to 529.40, 791.67 and 430.99
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Solution
The fourth proportional to 529.40, 791.67 and 430.99 is: 644.50
Step by Step Solution
- Step 1: Write the proportion equation
529.40 : 791.67 = 430.99 : x - Step 2: Convert to fraction form
529.40/791.67 = 430.99/x - Step 3: Cross multiply
529.40x = 791.67 × 430.99 - Step 4: Simplify right side
529.40x = 341,201.49 - Step 5: Solve for x
x = 341,201.49/529.40 - Step 6: Final answer
x = 644.50
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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.