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Finding the Fourth Proportional to 1,201.77, 1,805.42 and 1,152.56

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Solution

The fourth proportional to 1,201.77, 1,805.42 and 1,152.56 is: 1,731.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201.77 : 1,805.42 = 1,152.56 : x
  2. Step 2: Convert to fraction form
    1,201.77/1,805.42 = 1,152.56/x
  3. Step 3: Cross multiply
    1,201.77x = 1,805.42 × 1,152.56
  4. Step 4: Simplify right side
    1,201.77x = 2,080,862.27
  5. Step 5: Solve for x
    x = 2,080,862.27/1,201.77
  6. Step 6: Final answer
    x = 1,731.50

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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.