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Finding the Fourth Proportional to 453.87, 626.40 and 276.94

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Solution

The fourth proportional to 453.87, 626.40 and 276.94 is: 382.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.87 : 626.40 = 276.94 : x
  2. Step 2: Convert to fraction form
    453.87/626.40 = 276.94/x
  3. Step 3: Cross multiply
    453.87x = 626.40 × 276.94
  4. Step 4: Simplify right side
    453.87x = 173,472.48
  5. Step 5: Solve for x
    x = 173,472.48/453.87
  6. Step 6: Final answer
    x = 382.21

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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.