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Finding the Fourth Proportional to 453.57, 626.21 and 348.45

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Solution

The fourth proportional to 453.57, 626.21 and 348.45 is: 481.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.57 : 626.21 = 348.45 : x
  2. Step 2: Convert to fraction form
    453.57/626.21 = 348.45/x
  3. Step 3: Cross multiply
    453.57x = 626.21 × 348.45
  4. Step 4: Simplify right side
    453.57x = 218,206.75
  5. Step 5: Solve for x
    x = 218,206.75/453.57
  6. Step 6: Final answer
    x = 481.09

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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.