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Finding the Fourth Proportional to 448.43, 673.05 and 383.63

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Solution

The fourth proportional to 448.43, 673.05 and 383.63 is: 575.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.43 : 673.05 = 383.63 : x
  2. Step 2: Convert to fraction form
    448.43/673.05 = 383.63/x
  3. Step 3: Cross multiply
    448.43x = 673.05 × 383.63
  4. Step 4: Simplify right side
    448.43x = 258,202.17
  5. Step 5: Solve for x
    x = 258,202.17/448.43
  6. Step 6: Final answer
    x = 575.79

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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.