Finding the Fourth Proportional to 219.18, 302.76 and 161.26
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Solution
The fourth proportional to 219.18, 302.76 and 161.26 is: 222.75
Step by Step Solution
- Step 1: Write the proportion equation
219.18 : 302.76 = 161.26 : x - Step 2: Convert to fraction form
219.18/302.76 = 161.26/x - Step 3: Cross multiply
219.18x = 302.76 × 161.26 - Step 4: Simplify right side
219.18x = 48,823.08 - Step 5: Solve for x
x = 48,823.08/219.18 - Step 6: Final answer
x = 222.75
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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.