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Finding the Fourth Proportional to 453.28, 625.31 and 266.71

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Solution

The fourth proportional to 453.28, 625.31 and 266.71 is: 367.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.28 : 625.31 = 266.71 : x
  2. Step 2: Convert to fraction form
    453.28/625.31 = 266.71/x
  3. Step 3: Cross multiply
    453.28x = 625.31 × 266.71
  4. Step 4: Simplify right side
    453.28x = 166,776.43
  5. Step 5: Solve for x
    x = 166,776.43/453.28
  6. Step 6: Final answer
    x = 367.93

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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.