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Finding the Fourth Proportional to 174.12, 240.34 and 134.87

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Solution

The fourth proportional to 174.12, 240.34 and 134.87 is: 186.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.12 : 240.34 = 134.87 : x
  2. Step 2: Convert to fraction form
    174.12/240.34 = 134.87/x
  3. Step 3: Cross multiply
    174.12x = 240.34 × 134.87
  4. Step 4: Simplify right side
    174.12x = 32,414.50
  5. Step 5: Solve for x
    x = 32,414.50/174.12
  6. Step 6: Final answer
    x = 186.17

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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.