Finding the Fourth Proportional to 430.14, 645.21 and 333.75
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Solution
The fourth proportional to 430.14, 645.21 and 333.75 is: 500.63
Step by Step Solution
- Step 1: Write the proportion equation
430.14 : 645.21 = 333.75 : x - Step 2: Convert to fraction form
430.14/645.21 = 333.75/x - Step 3: Cross multiply
430.14x = 645.21 × 333.75 - Step 4: Simplify right side
430.14x = 215,338.84 - Step 5: Solve for x
x = 215,338.84/430.14 - Step 6: Final answer
x = 500.63
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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.