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Finding the Fourth Proportional to 174.36, 261.49 and 140.19

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Solution

The fourth proportional to 174.36, 261.49 and 140.19 is: 210.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.36 : 261.49 = 140.19 : x
  2. Step 2: Convert to fraction form
    174.36/261.49 = 140.19/x
  3. Step 3: Cross multiply
    174.36x = 261.49 × 140.19
  4. Step 4: Simplify right side
    174.36x = 36,658.28
  5. Step 5: Solve for x
    x = 36,658.28/174.36
  6. Step 6: Final answer
    x = 210.24

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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.