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Finding the Fourth Proportional to 1,559.74, 2,340.33 and 682.13

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Solution

The fourth proportional to 1,559.74, 2,340.33 and 682.13 is: 1,023.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.74 : 2,340.33 = 682.13 : x
  2. Step 2: Convert to fraction form
    1,559.74/2,340.33 = 682.13/x
  3. Step 3: Cross multiply
    1,559.74x = 2,340.33 × 682.13
  4. Step 4: Simplify right side
    1,559.74x = 1,596,401.90
  5. Step 5: Solve for x
    x = 1,596,401.90/1,559.74
  6. Step 6: Final answer
    x = 1,023.51

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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.