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Finding the Fourth Proportional to 451.67, 677.54 and 208.26

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Solution

The fourth proportional to 451.67, 677.54 and 208.26 is: 312.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.67 : 677.54 = 208.26 : x
  2. Step 2: Convert to fraction form
    451.67/677.54 = 208.26/x
  3. Step 3: Cross multiply
    451.67x = 677.54 × 208.26
  4. Step 4: Simplify right side
    451.67x = 141,105.00
  5. Step 5: Solve for x
    x = 141,105.00/451.67
  6. Step 6: Final answer
    x = 312.41

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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.