Finding the Fourth Proportional to 430.29, 645.84 and 225.09
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Solution
The fourth proportional to 430.29, 645.84 and 225.09 is: 337.85
Step by Step Solution
- Step 1: Write the proportion equation
430.29 : 645.84 = 225.09 : x - Step 2: Convert to fraction form
430.29/645.84 = 225.09/x - Step 3: Cross multiply
430.29x = 645.84 × 225.09 - Step 4: Simplify right side
430.29x = 145,372.13 - Step 5: Solve for x
x = 145,372.13/430.29 - Step 6: Final answer
x = 337.85
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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.