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Finding the Fourth Proportional to 453.66, 679.46 and 289.13

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Solution

The fourth proportional to 453.66, 679.46 and 289.13 is: 433.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.66 : 679.46 = 289.13 : x
  2. Step 2: Convert to fraction form
    453.66/679.46 = 289.13/x
  3. Step 3: Cross multiply
    453.66x = 679.46 × 289.13
  4. Step 4: Simplify right side
    453.66x = 196,447.43
  5. Step 5: Solve for x
    x = 196,447.43/453.66
  6. Step 6: Final answer
    x = 433.03

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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.