Finding the Fourth Proportional to 1,252.08, 1,878 and 430.36
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Solution
The fourth proportional to 1,252.08, 1,878 and 430.36 is: 645.50
Step by Step Solution
- Step 1: Write the proportion equation
1,252.08 : 1,878 = 430.36 : x - Step 2: Convert to fraction form
1,252.08/1,878 = 430.36/x - Step 3: Cross multiply
1,252.08x = 1,878 × 430.36 - Step 4: Simplify right side
1,252.08x = 808,216.08 - Step 5: Solve for x
x = 808,216.08/1,252.08 - Step 6: Final answer
x = 645.50
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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.