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Finding the Fourth Proportional to 757.33, 1,040.67 and 617.15

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Solution

The fourth proportional to 757.33, 1,040.67 and 617.15 is: 848.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.33 : 1,040.67 = 617.15 : x
  2. Step 2: Convert to fraction form
    757.33/1,040.67 = 617.15/x
  3. Step 3: Cross multiply
    757.33x = 1,040.67 × 617.15
  4. Step 4: Simplify right side
    757.33x = 642,252.09
  5. Step 5: Solve for x
    x = 642,252.09/757.33
  6. Step 6: Final answer
    x = 848.05

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.