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Finding the Fourth Proportional to 190.35, 283.35 and 188.28

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Solution

The fourth proportional to 190.35, 283.35 and 188.28 is: 280.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.35 : 283.35 = 188.28 : x
  2. Step 2: Convert to fraction form
    190.35/283.35 = 188.28/x
  3. Step 3: Cross multiply
    190.35x = 283.35 × 188.28
  4. Step 4: Simplify right side
    190.35x = 53,349.14
  5. Step 5: Solve for x
    x = 53,349.14/190.35
  6. Step 6: Final answer
    x = 280.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.