Finding the Fourth Proportional to 430.28, 644.99 and 170.13
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Solution
The fourth proportional to 430.28, 644.99 and 170.13 is: 255.02
Step by Step Solution
- Step 1: Write the proportion equation
430.28 : 644.99 = 170.13 : x - Step 2: Convert to fraction form
430.28/644.99 = 170.13/x - Step 3: Cross multiply
430.28x = 644.99 × 170.13 - Step 4: Simplify right side
430.28x = 109,732.15 - Step 5: Solve for x
x = 109,732.15/430.28 - Step 6: Final answer
x = 255.02
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.