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Finding the Fourth Proportional to 1,074.42, 1,483.41 and 825.29

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Solution

The fourth proportional to 1,074.42, 1,483.41 and 825.29 is: 1,139.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074.42 : 1,483.41 = 825.29 : x
  2. Step 2: Convert to fraction form
    1,074.42/1,483.41 = 825.29/x
  3. Step 3: Cross multiply
    1,074.42x = 1,483.41 × 825.29
  4. Step 4: Simplify right side
    1,074.42x = 1,224,243.44
  5. Step 5: Solve for x
    x = 1,224,243.44/1,074.42
  6. Step 6: Final answer
    x = 1,139.45

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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.