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Finding the Fourth Proportional to 654.66, 982.55 and 380.37

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Solution

The fourth proportional to 654.66, 982.55 and 380.37 is: 570.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.66 : 982.55 = 380.37 : x
  2. Step 2: Convert to fraction form
    654.66/982.55 = 380.37/x
  3. Step 3: Cross multiply
    654.66x = 982.55 × 380.37
  4. Step 4: Simplify right side
    654.66x = 373,732.54
  5. Step 5: Solve for x
    x = 373,732.54/654.66
  6. Step 6: Final answer
    x = 570.88

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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.