Finding the Fourth Proportional to 430.08, 644.81 and 276.18
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Solution
The fourth proportional to 430.08, 644.81 and 276.18 is: 414.07
Step by Step Solution
- Step 1: Write the proportion equation
430.08 : 644.81 = 276.18 : x - Step 2: Convert to fraction form
430.08/644.81 = 276.18/x - Step 3: Cross multiply
430.08x = 644.81 × 276.18 - Step 4: Simplify right side
430.08x = 178,082.24 - Step 5: Solve for x
x = 178,082.24/430.08 - Step 6: Final answer
x = 414.07
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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.