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Finding the Fourth Proportional to 1,175.57, 1,763.63 and 395.55

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Solution

The fourth proportional to 1,175.57, 1,763.63 and 395.55 is: 593.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.57 : 1,763.63 = 395.55 : x
  2. Step 2: Convert to fraction form
    1,175.57/1,763.63 = 395.55/x
  3. Step 3: Cross multiply
    1,175.57x = 1,763.63 × 395.55
  4. Step 4: Simplify right side
    1,175.57x = 697,608.10
  5. Step 5: Solve for x
    x = 697,608.10/1,175.57
  6. Step 6: Final answer
    x = 593.42

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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.