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Finding the Fourth Proportional to 453.18, 625.43 and 266.63

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Solution

The fourth proportional to 453.18, 625.43 and 266.63 is: 367.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.18 : 625.43 = 266.63 : x
  2. Step 2: Convert to fraction form
    453.18/625.43 = 266.63/x
  3. Step 3: Cross multiply
    453.18x = 625.43 × 266.63
  4. Step 4: Simplify right side
    453.18x = 166,754.44
  5. Step 5: Solve for x
    x = 166,754.44/453.18
  6. Step 6: Final answer
    x = 367.97

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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.