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Finding the Fourth Proportional to 190.35, 262.51 and 124.74

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Solution

The fourth proportional to 190.35, 262.51 and 124.74 is: 172.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.35 : 262.51 = 124.74 : x
  2. Step 2: Convert to fraction form
    190.35/262.51 = 124.74/x
  3. Step 3: Cross multiply
    190.35x = 262.51 × 124.74
  4. Step 4: Simplify right side
    190.35x = 32,745.19
  5. Step 5: Solve for x
    x = 32,745.19/190.35
  6. Step 6: Final answer
    x = 172.03

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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.