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Finding the Fourth Proportional to 619.96, 931.38 and 536.44

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Solution

The fourth proportional to 619.96, 931.38 and 536.44 is: 805.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.96 : 931.38 = 536.44 : x
  2. Step 2: Convert to fraction form
    619.96/931.38 = 536.44/x
  3. Step 3: Cross multiply
    619.96x = 931.38 × 536.44
  4. Step 4: Simplify right side
    619.96x = 499,629.49
  5. Step 5: Solve for x
    x = 499,629.49/619.96
  6. Step 6: Final answer
    x = 805.91

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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.