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Finding the Fourth Proportional to 1,480.56, 2,043.12 and 859.68

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Solution

The fourth proportional to 1,480.56, 2,043.12 and 859.68 is: 1,186.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.56 : 2,043.12 = 859.68 : x
  2. Step 2: Convert to fraction form
    1,480.56/2,043.12 = 859.68/x
  3. Step 3: Cross multiply
    1,480.56x = 2,043.12 × 859.68
  4. Step 4: Simplify right side
    1,480.56x = 1,756,429.40
  5. Step 5: Solve for x
    x = 1,756,429.40/1,480.56
  6. Step 6: Final answer
    x = 1,186.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.