Finding the Fourth Proportional to 1,259.31, 1,888.56 and 528.75
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Solution
The fourth proportional to 1,259.31, 1,888.56 and 528.75 is: 792.95
Step by Step Solution
- Step 1: Write the proportion equation
1,259.31 : 1,888.56 = 528.75 : x - Step 2: Convert to fraction form
1,259.31/1,888.56 = 528.75/x - Step 3: Cross multiply
1,259.31x = 1,888.56 × 528.75 - Step 4: Simplify right side
1,259.31x = 998,576.10 - Step 5: Solve for x
x = 998,576.10/1,259.31 - Step 6: Final answer
x = 792.95
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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.