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Finding the Fourth Proportional to 174.28, 261.24 and 71.52

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Solution

The fourth proportional to 174.28, 261.24 and 71.52 is: 107.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.28 : 261.24 = 71.52 : x
  2. Step 2: Convert to fraction form
    174.28/261.24 = 71.52/x
  3. Step 3: Cross multiply
    174.28x = 261.24 × 71.52
  4. Step 4: Simplify right side
    174.28x = 18,683.88
  5. Step 5: Solve for x
    x = 18,683.88/174.28
  6. Step 6: Final answer
    x = 107.21

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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.