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Finding the Fourth Proportional to 190.69, 261.24 and 183.40

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Solution

The fourth proportional to 190.69, 261.24 and 183.40 is: 251.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.69 : 261.24 = 183.40 : x
  2. Step 2: Convert to fraction form
    190.69/261.24 = 183.40/x
  3. Step 3: Cross multiply
    190.69x = 261.24 × 183.40
  4. Step 4: Simplify right side
    190.69x = 47,911.42
  5. Step 5: Solve for x
    x = 47,911.42/190.69
  6. Step 6: Final answer
    x = 251.25

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.