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Finding the Fourth Proportional to 1,195.58, 1,790.88 and 760.58

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Solution

The fourth proportional to 1,195.58, 1,790.88 and 760.58 is: 1,139.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.58 : 1,790.88 = 760.58 : x
  2. Step 2: Convert to fraction form
    1,195.58/1,790.88 = 760.58/x
  3. Step 3: Cross multiply
    1,195.58x = 1,790.88 × 760.58
  4. Step 4: Simplify right side
    1,195.58x = 1,362,107.51
  5. Step 5: Solve for x
    x = 1,362,107.51/1,195.58
  6. Step 6: Final answer
    x = 1,139.29

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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.