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Finding the Fourth Proportional to 415.77, 622.76 and 196.07

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Solution

The fourth proportional to 415.77, 622.76 and 196.07 is: 293.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.77 : 622.76 = 196.07 : x
  2. Step 2: Convert to fraction form
    415.77/622.76 = 196.07/x
  3. Step 3: Cross multiply
    415.77x = 622.76 × 196.07
  4. Step 4: Simplify right side
    415.77x = 122,101.83
  5. Step 5: Solve for x
    x = 122,101.83/415.77
  6. Step 6: Final answer
    x = 293.68

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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.