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Finding the Fourth Proportional to 448.94, 672.89 and 397.69

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Solution

The fourth proportional to 448.94, 672.89 and 397.69 is: 596.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.94 : 672.89 = 397.69 : x
  2. Step 2: Convert to fraction form
    448.94/672.89 = 397.69/x
  3. Step 3: Cross multiply
    448.94x = 672.89 × 397.69
  4. Step 4: Simplify right side
    448.94x = 267,601.62
  5. Step 5: Solve for x
    x = 267,601.62/448.94
  6. Step 6: Final answer
    x = 596.07

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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.