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Finding the Fourth Proportional to 344.36, 515.72 and 262.56

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Solution

The fourth proportional to 344.36, 515.72 and 262.56 is: 393.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.36 : 515.72 = 262.56 : x
  2. Step 2: Convert to fraction form
    344.36/515.72 = 262.56/x
  3. Step 3: Cross multiply
    344.36x = 515.72 × 262.56
  4. Step 4: Simplify right side
    344.36x = 135,407.44
  5. Step 5: Solve for x
    x = 135,407.44/344.36
  6. Step 6: Final answer
    x = 393.21

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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.