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Finding the Fourth Proportional to 190.14, 283.68 and 161.46

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Solution

The fourth proportional to 190.14, 283.68 and 161.46 is: 240.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.14 : 283.68 = 161.46 : x
  2. Step 2: Convert to fraction form
    190.14/283.68 = 161.46/x
  3. Step 3: Cross multiply
    190.14x = 283.68 × 161.46
  4. Step 4: Simplify right side
    190.14x = 45,802.17
  5. Step 5: Solve for x
    x = 45,802.17/190.14
  6. Step 6: Final answer
    x = 240.89

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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.