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Finding the Fourth Proportional to 1,549.68, 2,323.56 and 682.80

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Solution

The fourth proportional to 1,549.68, 2,323.56 and 682.80 is: 1,023.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.68 : 2,323.56 = 682.80 : x
  2. Step 2: Convert to fraction form
    1,549.68/2,323.56 = 682.80/x
  3. Step 3: Cross multiply
    1,549.68x = 2,323.56 × 682.80
  4. Step 4: Simplify right side
    1,549.68x = 1,586,526.77
  5. Step 5: Solve for x
    x = 1,586,526.77/1,549.68
  6. Step 6: Final answer
    x = 1,023.78

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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.