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Finding the Fourth Proportional to 443.40, 611.87 and 246.90

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Solution

The fourth proportional to 443.40, 611.87 and 246.90 is: 340.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.40 : 611.87 = 246.90 : x
  2. Step 2: Convert to fraction form
    443.40/611.87 = 246.90/x
  3. Step 3: Cross multiply
    443.40x = 611.87 × 246.90
  4. Step 4: Simplify right side
    443.40x = 151,069.47
  5. Step 5: Solve for x
    x = 151,069.47/443.40
  6. Step 6: Final answer
    x = 340.71

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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.