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Finding the Fourth Proportional to 1,359.51, 2,039.48 and 701.78

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Solution

The fourth proportional to 1,359.51, 2,039.48 and 701.78 is: 1,052.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.51 : 2,039.48 = 701.78 : x
  2. Step 2: Convert to fraction form
    1,359.51/2,039.48 = 701.78/x
  3. Step 3: Cross multiply
    1,359.51x = 2,039.48 × 701.78
  4. Step 4: Simplify right side
    1,359.51x = 1,431,252.57
  5. Step 5: Solve for x
    x = 1,431,252.57/1,359.51
  6. Step 6: Final answer
    x = 1,052.77

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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.