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Finding the Fourth Proportional to 300.71, 415.04 and 190.32

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Solution

The fourth proportional to 300.71, 415.04 and 190.32 is: 262.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.71 : 415.04 = 190.32 : x
  2. Step 2: Convert to fraction form
    300.71/415.04 = 190.32/x
  3. Step 3: Cross multiply
    300.71x = 415.04 × 190.32
  4. Step 4: Simplify right side
    300.71x = 78,989.46
  5. Step 5: Solve for x
    x = 78,989.46/300.71
  6. Step 6: Final answer
    x = 262.68

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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.