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Finding the Fourth Proportional to 190.32, 283.95 and 188.28

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Solution

The fourth proportional to 190.32, 283.95 and 188.28 is: 280.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.32 : 283.95 = 188.28 : x
  2. Step 2: Convert to fraction form
    190.32/283.95 = 188.28/x
  3. Step 3: Cross multiply
    190.32x = 283.95 × 188.28
  4. Step 4: Simplify right side
    190.32x = 53,462.11
  5. Step 5: Solve for x
    x = 53,462.11/190.32
  6. Step 6: Final answer
    x = 280.91

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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.