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Finding the Fourth Proportional to 712.18, 982.89 and 417.44

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Solution

The fourth proportional to 712.18, 982.89 and 417.44 is: 576.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.18 : 982.89 = 417.44 : x
  2. Step 2: Convert to fraction form
    712.18/982.89 = 417.44/x
  3. Step 3: Cross multiply
    712.18x = 982.89 × 417.44
  4. Step 4: Simplify right side
    712.18x = 410,297.60
  5. Step 5: Solve for x
    x = 410,297.60/712.18
  6. Step 6: Final answer
    x = 576.12

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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.