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Finding the Fourth Proportional to 1,820.68, 2,729.40 and 846.25

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Solution

The fourth proportional to 1,820.68, 2,729.40 and 846.25 is: 1,268.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.68 : 2,729.40 = 846.25 : x
  2. Step 2: Convert to fraction form
    1,820.68/2,729.40 = 846.25/x
  3. Step 3: Cross multiply
    1,820.68x = 2,729.40 × 846.25
  4. Step 4: Simplify right side
    1,820.68x = 2,309,764.75
  5. Step 5: Solve for x
    x = 2,309,764.75/1,820.68
  6. Step 6: Final answer
    x = 1,268.63

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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.