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Finding the Fourth Proportional to 448.83, 620.42 and 379.27

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Solution

The fourth proportional to 448.83, 620.42 and 379.27 is: 524.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.83 : 620.42 = 379.27 : x
  2. Step 2: Convert to fraction form
    448.83/620.42 = 379.27/x
  3. Step 3: Cross multiply
    448.83x = 620.42 × 379.27
  4. Step 4: Simplify right side
    448.83x = 235,306.69
  5. Step 5: Solve for x
    x = 235,306.69/448.83
  6. Step 6: Final answer
    x = 524.27

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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.