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Finding the Fourth Proportional to 453.67, 625.90 and 276.57

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Solution

The fourth proportional to 453.67, 625.90 and 276.57 is: 381.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.67 : 625.90 = 276.57 : x
  2. Step 2: Convert to fraction form
    453.67/625.90 = 276.57/x
  3. Step 3: Cross multiply
    453.67x = 625.90 × 276.57
  4. Step 4: Simplify right side
    453.67x = 173,105.16
  5. Step 5: Solve for x
    x = 173,105.16/453.67
  6. Step 6: Final answer
    x = 381.57

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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.