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Finding the Fourth Proportional to 1,074.38, 1,481.66 and 701.22

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Solution

The fourth proportional to 1,074.38, 1,481.66 and 701.22 is: 967.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074.38 : 1,481.66 = 701.22 : x
  2. Step 2: Convert to fraction form
    1,074.38/1,481.66 = 701.22/x
  3. Step 3: Cross multiply
    1,074.38x = 1,481.66 × 701.22
  4. Step 4: Simplify right side
    1,074.38x = 1,038,966.12
  5. Step 5: Solve for x
    x = 1,038,966.12/1,074.38
  6. Step 6: Final answer
    x = 967.04

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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.