Finding the Fourth Proportional to 470.10, 648.96 and 312.99
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Solution
The fourth proportional to 470.10, 648.96 and 312.99 is: 432.08
Step by Step Solution
- Step 1: Write the proportion equation
470.10 : 648.96 = 312.99 : x - Step 2: Convert to fraction form
470.10/648.96 = 312.99/x - Step 3: Cross multiply
470.10x = 648.96 × 312.99 - Step 4: Simplify right side
470.10x = 203,117.99 - Step 5: Solve for x
x = 203,117.99/470.10 - Step 6: Final answer
x = 432.08
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.