Finding the Third Proportional to 921 and 1,425.50
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Solution
The third proportional to 921 and 1,425.50 is: 2,206.35
Step by Step Solution
- Step 1: Write the proportion equation
921 : 1,425.50 = 1,425.50 : x - Step 2: Convert to fraction form
921/1,425.50 = 1,425.50/x - Step 3: Cross multiply
921x = 1,425.50 × 1,425.50 - Step 4: Simplify right side
921x = 2,032,050.25 - Step 5: Solve for x
x = 2,032,050.25/921 - Step 6: Final answer
x = 2,206.35
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Why These Related Problems?
These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.