Finding the Fourth Proportional to 438.99, 605.12 and 430.35
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Solution
The fourth proportional to 438.99, 605.12 and 430.35 is: 593.21
Step by Step Solution
- Step 1: Write the proportion equation
438.99 : 605.12 = 430.35 : x - Step 2: Convert to fraction form
438.99/605.12 = 430.35/x - Step 3: Cross multiply
438.99x = 605.12 × 430.35 - Step 4: Simplify right side
438.99x = 260,411.24 - Step 5: Solve for x
x = 260,411.24/438.99 - Step 6: Final answer
x = 593.21
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.