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Finding the Fourth Proportional to 377.44, 520.60 and 346.45

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Solution

The fourth proportional to 377.44, 520.60 and 346.45 is: 477.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.44 : 520.60 = 346.45 : x
  2. Step 2: Convert to fraction form
    377.44/520.60 = 346.45/x
  3. Step 3: Cross multiply
    377.44x = 520.60 × 346.45
  4. Step 4: Simplify right side
    377.44x = 180,361.87
  5. Step 5: Solve for x
    x = 180,361.87/377.44
  6. Step 6: Final answer
    x = 477.86

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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.