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Finding the Fourth Proportional to 537.80, 806.70 and 440.60

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Solution

The fourth proportional to 537.80, 806.70 and 440.60 is: 660.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.80 : 806.70 = 440.60 : x
  2. Step 2: Convert to fraction form
    537.80/806.70 = 440.60/x
  3. Step 3: Cross multiply
    537.80x = 806.70 × 440.60
  4. Step 4: Simplify right side
    537.80x = 355,432.02
  5. Step 5: Solve for x
    x = 355,432.02/537.80
  6. Step 6: Final answer
    x = 660.90

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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.