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Finding the Fourth Proportional to 174.22, 240.13 and 139.39

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Solution

The fourth proportional to 174.22, 240.13 and 139.39 is: 192.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.22 : 240.13 = 139.39 : x
  2. Step 2: Convert to fraction form
    174.22/240.13 = 139.39/x
  3. Step 3: Cross multiply
    174.22x = 240.13 × 139.39
  4. Step 4: Simplify right side
    174.22x = 33,471.72
  5. Step 5: Solve for x
    x = 33,471.72/174.22
  6. Step 6: Final answer
    x = 192.12

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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.