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Finding the Fourth Proportional to 247.47, 341.51 and 136.96

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Solution

The fourth proportional to 247.47, 341.51 and 136.96 is: 189.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.47 : 341.51 = 136.96 : x
  2. Step 2: Convert to fraction form
    247.47/341.51 = 136.96/x
  3. Step 3: Cross multiply
    247.47x = 341.51 × 136.96
  4. Step 4: Simplify right side
    247.47x = 46,772.70
  5. Step 5: Solve for x
    x = 46,772.70/247.47
  6. Step 6: Final answer
    x = 189.00

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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.