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Finding the Fourth Proportional to 453.74, 626.09 and 254.53

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Solution

The fourth proportional to 453.74, 626.09 and 254.53 is: 351.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.74 : 626.09 = 254.53 : x
  2. Step 2: Convert to fraction form
    453.74/626.09 = 254.53/x
  3. Step 3: Cross multiply
    453.74x = 626.09 × 254.53
  4. Step 4: Simplify right side
    453.74x = 159,358.69
  5. Step 5: Solve for x
    x = 159,358.69/453.74
  6. Step 6: Final answer
    x = 351.21

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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.