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Finding the Fourth Proportional to 190.63, 284.36 and 168.76

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Solution

The fourth proportional to 190.63, 284.36 and 168.76 is: 251.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.63 : 284.36 = 168.76 : x
  2. Step 2: Convert to fraction form
    190.63/284.36 = 168.76/x
  3. Step 3: Cross multiply
    190.63x = 284.36 × 168.76
  4. Step 4: Simplify right side
    190.63x = 47,988.59
  5. Step 5: Solve for x
    x = 47,988.59/190.63
  6. Step 6: Final answer
    x = 251.74

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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.