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Finding the Fourth Proportional to 383.00, 574.16 and 139.37

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Solution

The fourth proportional to 383.00, 574.16 and 139.37 is: 208.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.00 : 574.16 = 139.37 : x
  2. Step 2: Convert to fraction form
    383.00/574.16 = 139.37/x
  3. Step 3: Cross multiply
    383.00x = 574.16 × 139.37
  4. Step 4: Simplify right side
    383.00x = 80,017.11
  5. Step 5: Solve for x
    x = 80,017.11/383.00
  6. Step 6: Final answer
    x = 208.92

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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.