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Finding the Fourth Proportional to 1,536.78, 2,305.55 and 441.23

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Solution

The fourth proportional to 1,536.78, 2,305.55 and 441.23 is: 661.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,536.78 : 2,305.55 = 441.23 : x
  2. Step 2: Convert to fraction form
    1,536.78/2,305.55 = 441.23/x
  3. Step 3: Cross multiply
    1,536.78x = 2,305.55 × 441.23
  4. Step 4: Simplify right side
    1,536.78x = 1,017,277.89
  5. Step 5: Solve for x
    x = 1,017,277.89/1,536.78
  6. Step 6: Final answer
    x = 661.95

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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.