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Finding the Fourth Proportional to 605.56, 905.56 and 451.59

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Solution

The fourth proportional to 605.56, 905.56 and 451.59 is: 675.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.56 : 905.56 = 451.59 : x
  2. Step 2: Convert to fraction form
    605.56/905.56 = 451.59/x
  3. Step 3: Cross multiply
    605.56x = 905.56 × 451.59
  4. Step 4: Simplify right side
    605.56x = 408,941.84
  5. Step 5: Solve for x
    x = 408,941.84/605.56
  6. Step 6: Final answer
    x = 675.31

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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.