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Finding the Fourth Proportional to 2,321.44, 3,482.27 and 761.53

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Solution

The fourth proportional to 2,321.44, 3,482.27 and 761.53 is: 1,142.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321.44 : 3,482.27 = 761.53 : x
  2. Step 2: Convert to fraction form
    2,321.44/3,482.27 = 761.53/x
  3. Step 3: Cross multiply
    2,321.44x = 3,482.27 × 761.53
  4. Step 4: Simplify right side
    2,321.44x = 2,651,853.07
  5. Step 5: Solve for x
    x = 2,651,853.07/2,321.44
  6. Step 6: Final answer
    x = 1,142.33

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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.