Finding the Fourth Proportional to 219.21, 302.25 and 207.66
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Solution
The fourth proportional to 219.21, 302.25 and 207.66 is: 286.32
Step by Step Solution
- Step 1: Write the proportion equation
219.21 : 302.25 = 207.66 : x - Step 2: Convert to fraction form
219.21/302.25 = 207.66/x - Step 3: Cross multiply
219.21x = 302.25 × 207.66 - Step 4: Simplify right side
219.21x = 62,765.24 - Step 5: Solve for x
x = 62,765.24/219.21 - Step 6: Final answer
x = 286.32
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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.