Finding the Fourth Proportional to 219.06, 302.45 and 136.20
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Solution
The fourth proportional to 219.06, 302.45 and 136.20 is: 188.04
Step by Step Solution
- Step 1: Write the proportion equation
219.06 : 302.45 = 136.20 : x - Step 2: Convert to fraction form
219.06/302.45 = 136.20/x - Step 3: Cross multiply
219.06x = 302.45 × 136.20 - Step 4: Simplify right side
219.06x = 41,193.01 - Step 5: Solve for x
x = 41,193.01/219.06 - Step 6: Final answer
x = 188.04
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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.