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Finding the Fourth Proportional to 443.15, 611.55 and 246.66

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Solution

The fourth proportional to 443.15, 611.55 and 246.66 is: 340.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.15 : 611.55 = 246.66 : x
  2. Step 2: Convert to fraction form
    443.15/611.55 = 246.66/x
  3. Step 3: Cross multiply
    443.15x = 611.55 × 246.66
  4. Step 4: Simplify right side
    443.15x = 150,840.63
  5. Step 5: Solve for x
    x = 150,840.63/443.15
  6. Step 6: Final answer
    x = 340.39

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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.