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Finding the Fourth Proportional to 417.25, 625.69 and 197.83

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Solution

The fourth proportional to 417.25, 625.69 and 197.83 is: 296.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.25 : 625.69 = 197.83 : x
  2. Step 2: Convert to fraction form
    417.25/625.69 = 197.83/x
  3. Step 3: Cross multiply
    417.25x = 625.69 × 197.83
  4. Step 4: Simplify right side
    417.25x = 123,777.76
  5. Step 5: Solve for x
    x = 123,777.76/417.25
  6. Step 6: Final answer
    x = 296.65

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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.