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Finding the Fourth Proportional to 453.56, 679.92 and 236.88

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Solution

The fourth proportional to 453.56, 679.92 and 236.88 is: 355.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.56 : 679.92 = 236.88 : x
  2. Step 2: Convert to fraction form
    453.56/679.92 = 236.88/x
  3. Step 3: Cross multiply
    453.56x = 679.92 × 236.88
  4. Step 4: Simplify right side
    453.56x = 161,059.45
  5. Step 5: Solve for x
    x = 161,059.45/453.56
  6. Step 6: Final answer
    x = 355.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.