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Finding the Fourth Proportional to 1,283.58, 1,770.93 and 759.51

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Solution

The fourth proportional to 1,283.58, 1,770.93 and 759.51 is: 1,047.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.58 : 1,770.93 = 759.51 : x
  2. Step 2: Convert to fraction form
    1,283.58/1,770.93 = 759.51/x
  3. Step 3: Cross multiply
    1,283.58x = 1,770.93 × 759.51
  4. Step 4: Simplify right side
    1,283.58x = 1,345,039.04
  5. Step 5: Solve for x
    x = 1,345,039.04/1,283.58
  6. Step 6: Final answer
    x = 1,047.88

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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.