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Finding the Fourth Proportional to 380.96, 570.06 and 371.84

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Solution

The fourth proportional to 380.96, 570.06 and 371.84 is: 556.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.96 : 570.06 = 371.84 : x
  2. Step 2: Convert to fraction form
    380.96/570.06 = 371.84/x
  3. Step 3: Cross multiply
    380.96x = 570.06 × 371.84
  4. Step 4: Simplify right side
    380.96x = 211,972.54
  5. Step 5: Solve for x
    x = 211,972.54/380.96
  6. Step 6: Final answer
    x = 556.42

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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.