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Finding the Fourth Proportional to 448.83, 673.14 and 426.89

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Solution

The fourth proportional to 448.83, 673.14 and 426.89 is: 640.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.83 : 673.14 = 426.89 : x
  2. Step 2: Convert to fraction form
    448.83/673.14 = 426.89/x
  3. Step 3: Cross multiply
    448.83x = 673.14 × 426.89
  4. Step 4: Simplify right side
    448.83x = 287,353.37
  5. Step 5: Solve for x
    x = 287,353.37/448.83
  6. Step 6: Final answer
    x = 640.23

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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.