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Finding the Fourth Proportional to 453.85, 676.08 and 440.26

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Solution

The fourth proportional to 453.85, 676.08 and 440.26 is: 655.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.85 : 676.08 = 440.26 : x
  2. Step 2: Convert to fraction form
    453.85/676.08 = 440.26/x
  3. Step 3: Cross multiply
    453.85x = 676.08 × 440.26
  4. Step 4: Simplify right side
    453.85x = 297,650.98
  5. Step 5: Solve for x
    x = 297,650.98/453.85
  6. Step 6: Final answer
    x = 655.84

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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.