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Finding the Fourth Proportional to 247.22, 341.14 and 136.70

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Solution

The fourth proportional to 247.22, 341.14 and 136.70 is: 188.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.22 : 341.14 = 136.70 : x
  2. Step 2: Convert to fraction form
    247.22/341.14 = 136.70/x
  3. Step 3: Cross multiply
    247.22x = 341.14 × 136.70
  4. Step 4: Simplify right side
    247.22x = 46,633.84
  5. Step 5: Solve for x
    x = 46,633.84/247.22
  6. Step 6: Final answer
    x = 188.63

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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.