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Finding the Fourth Proportional to 453.94, 680.79 and 210.22

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Solution

The fourth proportional to 453.94, 680.79 and 210.22 is: 315.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.94 : 680.79 = 210.22 : x
  2. Step 2: Convert to fraction form
    453.94/680.79 = 210.22/x
  3. Step 3: Cross multiply
    453.94x = 680.79 × 210.22
  4. Step 4: Simplify right side
    453.94x = 143,115.67
  5. Step 5: Solve for x
    x = 143,115.67/453.94
  6. Step 6: Final answer
    x = 315.27

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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.