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Finding the Fourth Proportional to 453.80, 680.70 and 451.10

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Solution

The fourth proportional to 453.80, 680.70 and 451.10 is: 676.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.80 : 680.70 = 451.10 : x
  2. Step 2: Convert to fraction form
    453.80/680.70 = 451.10/x
  3. Step 3: Cross multiply
    453.80x = 680.70 × 451.10
  4. Step 4: Simplify right side
    453.80x = 307,063.77
  5. Step 5: Solve for x
    x = 307,063.77/453.80
  6. Step 6: Final answer
    x = 676.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.