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Finding the Fourth Proportional to 247.24, 368.87 and 206.74

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Solution

The fourth proportional to 247.24, 368.87 and 206.74 is: 308.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.24 : 368.87 = 206.74 : x
  2. Step 2: Convert to fraction form
    247.24/368.87 = 206.74/x
  3. Step 3: Cross multiply
    247.24x = 368.87 × 206.74
  4. Step 4: Simplify right side
    247.24x = 76,260.18
  5. Step 5: Solve for x
    x = 76,260.18/247.24
  6. Step 6: Final answer
    x = 308.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.