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Finding the Fourth Proportional to 453.60, 626.02 and 257.14

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Solution

The fourth proportional to 453.60, 626.02 and 257.14 is: 354.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.60 : 626.02 = 257.14 : x
  2. Step 2: Convert to fraction form
    453.60/626.02 = 257.14/x
  3. Step 3: Cross multiply
    453.60x = 626.02 × 257.14
  4. Step 4: Simplify right side
    453.60x = 160,974.78
  5. Step 5: Solve for x
    x = 160,974.78/453.60
  6. Step 6: Final answer
    x = 354.88

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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.