Finding the Fourth Proportional to 839.90, 1,258.94 and 565.31
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Solution
The fourth proportional to 839.90, 1,258.94 and 565.31 is: 847.36
Step by Step Solution
- Step 1: Write the proportion equation
839.90 : 1,258.94 = 565.31 : x - Step 2: Convert to fraction form
839.90/1,258.94 = 565.31/x - Step 3: Cross multiply
839.90x = 1,258.94 × 565.31 - Step 4: Simplify right side
839.90x = 711,695.93 - Step 5: Solve for x
x = 711,695.93/839.90 - Step 6: Final answer
x = 847.36
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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.