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Finding the Fourth Proportional to 755.56, 1,132.96 and 293.45

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Solution

The fourth proportional to 755.56, 1,132.96 and 293.45 is: 440.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.56 : 1,132.96 = 293.45 : x
  2. Step 2: Convert to fraction form
    755.56/1,132.96 = 293.45/x
  3. Step 3: Cross multiply
    755.56x = 1,132.96 × 293.45
  4. Step 4: Simplify right side
    755.56x = 332,467.11
  5. Step 5: Solve for x
    x = 332,467.11/755.56
  6. Step 6: Final answer
    x = 440.03

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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.