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Finding the Fourth Proportional to 518.53, 716.08 and 443.41

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Solution

The fourth proportional to 518.53, 716.08 and 443.41 is: 612.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.53 : 716.08 = 443.41 : x
  2. Step 2: Convert to fraction form
    518.53/716.08 = 443.41/x
  3. Step 3: Cross multiply
    518.53x = 716.08 × 443.41
  4. Step 4: Simplify right side
    518.53x = 317,516.50
  5. Step 5: Solve for x
    x = 317,516.50/518.53
  6. Step 6: Final answer
    x = 612.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.