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Finding the Fourth Proportional to 451.69, 677.81 and 195.19

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Solution

The fourth proportional to 451.69, 677.81 and 195.19 is: 292.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.69 : 677.81 = 195.19 : x
  2. Step 2: Convert to fraction form
    451.69/677.81 = 195.19/x
  3. Step 3: Cross multiply
    451.69x = 677.81 × 195.19
  4. Step 4: Simplify right side
    451.69x = 132,300.76
  5. Step 5: Solve for x
    x = 132,300.76/451.69
  6. Step 6: Final answer
    x = 292.90

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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.