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Finding the Fourth Proportional to 247.06, 370.46 and 84.68

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Solution

The fourth proportional to 247.06, 370.46 and 84.68 is: 126.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.06 : 370.46 = 84.68 : x
  2. Step 2: Convert to fraction form
    247.06/370.46 = 84.68/x
  3. Step 3: Cross multiply
    247.06x = 370.46 × 84.68
  4. Step 4: Simplify right side
    247.06x = 31,370.55
  5. Step 5: Solve for x
    x = 31,370.55/247.06
  6. Step 6: Final answer
    x = 126.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.