Finding the Fourth Proportional to 219.29, 328.94 and 56.99
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Solution
The fourth proportional to 219.29, 328.94 and 56.99 is: 85.48
Step by Step Solution
- Step 1: Write the proportion equation
219.29 : 328.94 = 56.99 : x - Step 2: Convert to fraction form
219.29/328.94 = 56.99/x - Step 3: Cross multiply
219.29x = 328.94 × 56.99 - Step 4: Simplify right side
219.29x = 18,744.36 - Step 5: Solve for x
x = 18,744.36/219.29 - Step 6: Final answer
x = 85.48
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.