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Finding the Fourth Proportional to 601.96, 830.79 and 380.86

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Solution

The fourth proportional to 601.96, 830.79 and 380.86 is: 525.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.96 : 830.79 = 380.86 : x
  2. Step 2: Convert to fraction form
    601.96/830.79 = 380.86/x
  3. Step 3: Cross multiply
    601.96x = 830.79 × 380.86
  4. Step 4: Simplify right side
    601.96x = 316,414.68
  5. Step 5: Solve for x
    x = 316,414.68/601.96
  6. Step 6: Final answer
    x = 525.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.