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Finding the Fourth Proportional to 377.28, 520.44 and 260.64

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Solution

The fourth proportional to 377.28, 520.44 and 260.64 is: 359.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.28 : 520.44 = 260.64 : x
  2. Step 2: Convert to fraction form
    377.28/520.44 = 260.64/x
  3. Step 3: Cross multiply
    377.28x = 520.44 × 260.64
  4. Step 4: Simplify right side
    377.28x = 135,647.48
  5. Step 5: Solve for x
    x = 135,647.48/377.28
  6. Step 6: Final answer
    x = 359.54

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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.