Finding the Fourth Proportional to 430.09, 645.14 and 170.08
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Solution
The fourth proportional to 430.09, 645.14 and 170.08 is: 255.12
Step by Step Solution
- Step 1: Write the proportion equation
430.09 : 645.14 = 170.08 : x - Step 2: Convert to fraction form
430.09/645.14 = 170.08/x - Step 3: Cross multiply
430.09x = 645.14 × 170.08 - Step 4: Simplify right side
430.09x = 109,721.34 - Step 5: Solve for x
x = 109,721.34/430.09 - Step 6: Final answer
x = 255.12
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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.