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Finding the Fourth Proportional to 472.84, 649.79 and 451.44

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Solution

The fourth proportional to 472.84, 649.79 and 451.44 is: 620.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.84 : 649.79 = 451.44 : x
  2. Step 2: Convert to fraction form
    472.84/649.79 = 451.44/x
  3. Step 3: Cross multiply
    472.84x = 649.79 × 451.44
  4. Step 4: Simplify right side
    472.84x = 293,340.63
  5. Step 5: Solve for x
    x = 293,340.63/472.84
  6. Step 6: Final answer
    x = 620.38

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.