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Finding the Fourth Proportional to 1,158.72, 1,600.44 and 843.49

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Solution

The fourth proportional to 1,158.72, 1,600.44 and 843.49 is: 1,165.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.72 : 1,600.44 = 843.49 : x
  2. Step 2: Convert to fraction form
    1,158.72/1,600.44 = 843.49/x
  3. Step 3: Cross multiply
    1,158.72x = 1,600.44 × 843.49
  4. Step 4: Simplify right side
    1,158.72x = 1,349,945.02
  5. Step 5: Solve for x
    x = 1,349,945.02/1,158.72
  6. Step 6: Final answer
    x = 1,165.03

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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.