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Finding the Fourth Proportional to 351.30, 485.50 and 277.44

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Solution

The fourth proportional to 351.30, 485.50 and 277.44 is: 383.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.30 : 485.50 = 277.44 : x
  2. Step 2: Convert to fraction form
    351.30/485.50 = 277.44/x
  3. Step 3: Cross multiply
    351.30x = 485.50 × 277.44
  4. Step 4: Simplify right side
    351.30x = 134,697.12
  5. Step 5: Solve for x
    x = 134,697.12/351.30
  6. Step 6: Final answer
    x = 383.42

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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.