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Finding the Fourth Proportional to 1,119.44, 1,679.16 and 737.12

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Solution

The fourth proportional to 1,119.44, 1,679.16 and 737.12 is: 1,105.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.44 : 1,679.16 = 737.12 : x
  2. Step 2: Convert to fraction form
    1,119.44/1,679.16 = 737.12/x
  3. Step 3: Cross multiply
    1,119.44x = 1,679.16 × 737.12
  4. Step 4: Simplify right side
    1,119.44x = 1,237,742.42
  5. Step 5: Solve for x
    x = 1,237,742.42/1,119.44
  6. Step 6: Final answer
    x = 1,105.68

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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.