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Finding the Fourth Proportional to 1,396.89, 2,095.38 and 531.27

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Solution

The fourth proportional to 1,396.89, 2,095.38 and 531.27 is: 796.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.89 : 2,095.38 = 531.27 : x
  2. Step 2: Convert to fraction form
    1,396.89/2,095.38 = 531.27/x
  3. Step 3: Cross multiply
    1,396.89x = 2,095.38 × 531.27
  4. Step 4: Simplify right side
    1,396.89x = 1,113,212.53
  5. Step 5: Solve for x
    x = 1,113,212.53/1,396.89
  6. Step 6: Final answer
    x = 796.92

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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.