Finding the Fourth Proportional to 463.17, 638.99 and 305.88
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Solution
The fourth proportional to 463.17, 638.99 and 305.88 is: 421.99
Step by Step Solution
- Step 1: Write the proportion equation
463.17 : 638.99 = 305.88 : x - Step 2: Convert to fraction form
463.17/638.99 = 305.88/x - Step 3: Cross multiply
463.17x = 638.99 × 305.88 - Step 4: Simplify right side
463.17x = 195,454.18 - Step 5: Solve for x
x = 195,454.18/463.17 - Step 6: Final answer
x = 421.99
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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.