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Finding the Fourth Proportional to 397.85, 596.31 and 202.79

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Solution

The fourth proportional to 397.85, 596.31 and 202.79 is: 303.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.85 : 596.31 = 202.79 : x
  2. Step 2: Convert to fraction form
    397.85/596.31 = 202.79/x
  3. Step 3: Cross multiply
    397.85x = 596.31 × 202.79
  4. Step 4: Simplify right side
    397.85x = 120,925.70
  5. Step 5: Solve for x
    x = 120,925.70/397.85
  6. Step 6: Final answer
    x = 303.95

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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.