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Finding the Fourth Proportional to 247.05, 368.75 and 231.66

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Solution

The fourth proportional to 247.05, 368.75 and 231.66 is: 345.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.05 : 368.75 = 231.66 : x
  2. Step 2: Convert to fraction form
    247.05/368.75 = 231.66/x
  3. Step 3: Cross multiply
    247.05x = 368.75 × 231.66
  4. Step 4: Simplify right side
    247.05x = 85,425.20
  5. Step 5: Solve for x
    x = 85,425.20/247.05
  6. Step 6: Final answer
    x = 345.78

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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.