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Finding the Fourth Proportional to 451.48, 672.41 and 445.84

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Solution

The fourth proportional to 451.48, 672.41 and 445.84 is: 664.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.48 : 672.41 = 445.84 : x
  2. Step 2: Convert to fraction form
    451.48/672.41 = 445.84/x
  3. Step 3: Cross multiply
    451.48x = 672.41 × 445.84
  4. Step 4: Simplify right side
    451.48x = 299,787.27
  5. Step 5: Solve for x
    x = 299,787.27/451.48
  6. Step 6: Final answer
    x = 664.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.