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Finding the Fourth Proportional to 397.41, 595.55 and 191.97

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Solution

The fourth proportional to 397.41, 595.55 and 191.97 is: 287.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.41 : 595.55 = 191.97 : x
  2. Step 2: Convert to fraction form
    397.41/595.55 = 191.97/x
  3. Step 3: Cross multiply
    397.41x = 595.55 × 191.97
  4. Step 4: Simplify right side
    397.41x = 114,328.21
  5. Step 5: Solve for x
    x = 114,328.21/397.41
  6. Step 6: Final answer
    x = 287.69

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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.