Finding the Fourth Proportional to 219.18, 328.82 and 215.30
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Solution
The fourth proportional to 219.18, 328.82 and 215.30 is: 322.99
Step by Step Solution
- Step 1: Write the proportion equation
219.18 : 328.82 = 215.30 : x - Step 2: Convert to fraction form
219.18/328.82 = 215.30/x - Step 3: Cross multiply
219.18x = 328.82 × 215.30 - Step 4: Simplify right side
219.18x = 70,792.23 - Step 5: Solve for x
x = 70,792.23/219.18 - Step 6: Final answer
x = 322.99
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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.