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Finding the Fourth Proportional to 351.73, 484.89 and 253.30

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Solution

The fourth proportional to 351.73, 484.89 and 253.30 is: 349.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.73 : 484.89 = 253.30 : x
  2. Step 2: Convert to fraction form
    351.73/484.89 = 253.30/x
  3. Step 3: Cross multiply
    351.73x = 484.89 × 253.30
  4. Step 4: Simplify right side
    351.73x = 122,822.64
  5. Step 5: Solve for x
    x = 122,822.64/351.73
  6. Step 6: Final answer
    x = 349.20

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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.