Finding the Fourth Proportional to 430.23, 645.62 and 170.19
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Solution
The fourth proportional to 430.23, 645.62 and 170.19 is: 255.39
Step by Step Solution
- Step 1: Write the proportion equation
430.23 : 645.62 = 170.19 : x - Step 2: Convert to fraction form
430.23/645.62 = 170.19/x - Step 3: Cross multiply
430.23x = 645.62 × 170.19 - Step 4: Simplify right side
430.23x = 109,877.22 - Step 5: Solve for x
x = 109,877.22/430.23 - Step 6: Final answer
x = 255.39
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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.