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Finding the Fourth Proportional to 1,605.97, 2,408.97 and 510.31

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Solution

The fourth proportional to 1,605.97, 2,408.97 and 510.31 is: 765.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.97 : 2,408.97 = 510.31 : x
  2. Step 2: Convert to fraction form
    1,605.97/2,408.97 = 510.31/x
  3. Step 3: Cross multiply
    1,605.97x = 2,408.97 × 510.31
  4. Step 4: Simplify right side
    1,605.97x = 1,229,321.48
  5. Step 5: Solve for x
    x = 1,229,321.48/1,605.97
  6. Step 6: Final answer
    x = 765.47

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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.