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Finding the Fourth Proportional to 190.36, 285.70 and 94.28

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Solution

The fourth proportional to 190.36, 285.70 and 94.28 is: 141.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.36 : 285.70 = 94.28 : x
  2. Step 2: Convert to fraction form
    190.36/285.70 = 94.28/x
  3. Step 3: Cross multiply
    190.36x = 285.70 × 94.28
  4. Step 4: Simplify right side
    190.36x = 26,935.80
  5. Step 5: Solve for x
    x = 26,935.80/190.36
  6. Step 6: Final answer
    x = 141.50

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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.