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Finding the Fourth Proportional to 1,229.79, 1,840.01 and 682.41

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Solution

The fourth proportional to 1,229.79, 1,840.01 and 682.41 is: 1,021.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229.79 : 1,840.01 = 682.41 : x
  2. Step 2: Convert to fraction form
    1,229.79/1,840.01 = 682.41/x
  3. Step 3: Cross multiply
    1,229.79x = 1,840.01 × 682.41
  4. Step 4: Simplify right side
    1,229.79x = 1,255,637.81
  5. Step 5: Solve for x
    x = 1,255,637.81/1,229.79
  6. Step 6: Final answer
    x = 1,021.02

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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.