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Finding the Fourth Proportional to 756.12, 1,040.42 and 733.56

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Solution

The fourth proportional to 756.12, 1,040.42 and 733.56 is: 1,009.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.12 : 1,040.42 = 733.56 : x
  2. Step 2: Convert to fraction form
    756.12/1,040.42 = 733.56/x
  3. Step 3: Cross multiply
    756.12x = 1,040.42 × 733.56
  4. Step 4: Simplify right side
    756.12x = 763,210.50
  5. Step 5: Solve for x
    x = 763,210.50/756.12
  6. Step 6: Final answer
    x = 1,009.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.