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Finding the Fourth Proportional to 190.48, 284.80 and 161.94

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Solution

The fourth proportional to 190.48, 284.80 and 161.94 is: 242.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.48 : 284.80 = 161.94 : x
  2. Step 2: Convert to fraction form
    190.48/284.80 = 161.94/x
  3. Step 3: Cross multiply
    190.48x = 284.80 × 161.94
  4. Step 4: Simplify right side
    190.48x = 46,120.51
  5. Step 5: Solve for x
    x = 46,120.51/190.48
  6. Step 6: Final answer
    x = 242.13

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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.