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Finding the Fourth Proportional to 1,536.28, 2,305.49 and 611.75

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Solution

The fourth proportional to 1,536.28, 2,305.49 and 611.75 is: 918.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,536.28 : 2,305.49 = 611.75 : x
  2. Step 2: Convert to fraction form
    1,536.28/2,305.49 = 611.75/x
  3. Step 3: Cross multiply
    1,536.28x = 2,305.49 × 611.75
  4. Step 4: Simplify right side
    1,536.28x = 1,410,383.51
  5. Step 5: Solve for x
    x = 1,410,383.51/1,536.28
  6. Step 6: Final answer
    x = 918.05

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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.