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Finding the Fourth Proportional to 376.44, 515.60 and 354.30

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Solution

The fourth proportional to 376.44, 515.60 and 354.30 is: 485.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.44 : 515.60 = 354.30 : x
  2. Step 2: Convert to fraction form
    376.44/515.60 = 354.30/x
  3. Step 3: Cross multiply
    376.44x = 515.60 × 354.30
  4. Step 4: Simplify right side
    376.44x = 182,675.31
  5. Step 5: Solve for x
    x = 182,675.31/376.44
  6. Step 6: Final answer
    x = 485.27

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.