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Finding the Fourth Proportional to 453.48, 622.44 and 409.80

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Solution

The fourth proportional to 453.48, 622.44 and 409.80 is: 562.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.48 : 622.44 = 409.80 : x
  2. Step 2: Convert to fraction form
    453.48/622.44 = 409.80/x
  3. Step 3: Cross multiply
    453.48x = 622.44 × 409.80
  4. Step 4: Simplify right side
    453.48x = 255,075.91
  5. Step 5: Solve for x
    x = 255,075.91/453.48
  6. Step 6: Final answer
    x = 562.49

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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.