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Finding the Fourth Proportional to 351.52, 485.16 and 268.47

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Solution

The fourth proportional to 351.52, 485.16 and 268.47 is: 370.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.52 : 485.16 = 268.47 : x
  2. Step 2: Convert to fraction form
    351.52/485.16 = 268.47/x
  3. Step 3: Cross multiply
    351.52x = 485.16 × 268.47
  4. Step 4: Simplify right side
    351.52x = 130,250.91
  5. Step 5: Solve for x
    x = 130,250.91/351.52
  6. Step 6: Final answer
    x = 370.54

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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.