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Finding the Fourth Proportional to 301.08, 415.20 and 190.35

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Solution

The fourth proportional to 301.08, 415.20 and 190.35 is: 262.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.08 : 415.20 = 190.35 : x
  2. Step 2: Convert to fraction form
    301.08/415.20 = 190.35/x
  3. Step 3: Cross multiply
    301.08x = 415.20 × 190.35
  4. Step 4: Simplify right side
    301.08x = 79,033.32
  5. Step 5: Solve for x
    x = 79,033.32/301.08
  6. Step 6: Final answer
    x = 262.50

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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.