Finding the Fourth Proportional to 867.24, 1,297.08 and 578.88
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Solution
The fourth proportional to 867.24, 1,297.08 and 578.88 is: 865.80
Step by Step Solution
- Step 1: Write the proportion equation
867.24 : 1,297.08 = 578.88 : x - Step 2: Convert to fraction form
867.24/1,297.08 = 578.88/x - Step 3: Cross multiply
867.24x = 1,297.08 × 578.88 - Step 4: Simplify right side
867.24x = 750,853.67 - Step 5: Solve for x
x = 750,853.67/867.24 - Step 6: Final answer
x = 865.80
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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.