Finding the Fourth Proportional to 423.64, 635.14 and 207
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Solution
The fourth proportional to 423.64, 635.14 and 207 is: 310.34
Step by Step Solution
- Step 1: Write the proportion equation
423.64 : 635.14 = 207 : x - Step 2: Convert to fraction form
423.64/635.14 = 207/x - Step 3: Cross multiply
423.64x = 635.14 × 207 - Step 4: Simplify right side
423.64x = 131,473.98 - Step 5: Solve for x
x = 131,473.98/423.64 - Step 6: Final answer
x = 310.34
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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.