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Finding the Fourth Proportional to 383.39, 575.01 and 149.13

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Solution

The fourth proportional to 383.39, 575.01 and 149.13 is: 223.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.39 : 575.01 = 149.13 : x
  2. Step 2: Convert to fraction form
    383.39/575.01 = 149.13/x
  3. Step 3: Cross multiply
    383.39x = 575.01 × 149.13
  4. Step 4: Simplify right side
    383.39x = 85,750.36
  5. Step 5: Solve for x
    x = 85,750.36/383.39
  6. Step 6: Final answer
    x = 223.66

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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.