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Finding the Fourth Proportional to 1,065.73, 1,597.26 and 757.65

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Solution

The fourth proportional to 1,065.73, 1,597.26 and 757.65 is: 1,135.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.73 : 1,597.26 = 757.65 : x
  2. Step 2: Convert to fraction form
    1,065.73/1,597.26 = 757.65/x
  3. Step 3: Cross multiply
    1,065.73x = 1,597.26 × 757.65
  4. Step 4: Simplify right side
    1,065.73x = 1,210,164.04
  5. Step 5: Solve for x
    x = 1,210,164.04/1,065.73
  6. Step 6: Final answer
    x = 1,135.53

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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.