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Finding the Fourth Proportional to 190.75, 263.24 and 117.07

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Solution

The fourth proportional to 190.75, 263.24 and 117.07 is: 161.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.75 : 263.24 = 117.07 : x
  2. Step 2: Convert to fraction form
    190.75/263.24 = 117.07/x
  3. Step 3: Cross multiply
    190.75x = 263.24 × 117.07
  4. Step 4: Simplify right side
    190.75x = 30,816.26
  5. Step 5: Solve for x
    x = 30,816.26/190.75
  6. Step 6: Final answer
    x = 161.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.