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Finding the Fourth Proportional to 351.47, 485.08 and 268.42

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Solution

The fourth proportional to 351.47, 485.08 and 268.42 is: 370.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.47 : 485.08 = 268.42 : x
  2. Step 2: Convert to fraction form
    351.47/485.08 = 268.42/x
  3. Step 3: Cross multiply
    351.47x = 485.08 × 268.42
  4. Step 4: Simplify right side
    351.47x = 130,205.17
  5. Step 5: Solve for x
    x = 130,205.17/351.47
  6. Step 6: Final answer
    x = 370.46

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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.