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Finding the Fourth Proportional to 174.30, 261.69 and 92.10

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Solution

The fourth proportional to 174.30, 261.69 and 92.10 is: 138.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.30 : 261.69 = 92.10 : x
  2. Step 2: Convert to fraction form
    174.30/261.69 = 92.10/x
  3. Step 3: Cross multiply
    174.30x = 261.69 × 92.10
  4. Step 4: Simplify right side
    174.30x = 24,101.65
  5. Step 5: Solve for x
    x = 24,101.65/174.30
  6. Step 6: Final answer
    x = 138.28

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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.