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Finding the Fourth Proportional to 1,216.41, 1,824.61 and 383.53

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Solution

The fourth proportional to 1,216.41, 1,824.61 and 383.53 is: 575.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216.41 : 1,824.61 = 383.53 : x
  2. Step 2: Convert to fraction form
    1,216.41/1,824.61 = 383.53/x
  3. Step 3: Cross multiply
    1,216.41x = 1,824.61 × 383.53
  4. Step 4: Simplify right side
    1,216.41x = 699,792.67
  5. Step 5: Solve for x
    x = 699,792.67/1,216.41
  6. Step 6: Final answer
    x = 575.29

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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.