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Finding the Fourth Proportional to 1,396.19, 2,092.65 and 573.45

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Solution

The fourth proportional to 1,396.19, 2,092.65 and 573.45 is: 859.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.19 : 2,092.65 = 573.45 : x
  2. Step 2: Convert to fraction form
    1,396.19/2,092.65 = 573.45/x
  3. Step 3: Cross multiply
    1,396.19x = 2,092.65 × 573.45
  4. Step 4: Simplify right side
    1,396.19x = 1,200,023.37
  5. Step 5: Solve for x
    x = 1,200,023.37/1,396.19
  6. Step 6: Final answer
    x = 859.50

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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.