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Finding the Fourth Proportional to 451.52, 676.32 and 305.36

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Solution

The fourth proportional to 451.52, 676.32 and 305.36 is: 457.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.52 : 676.32 = 305.36 : x
  2. Step 2: Convert to fraction form
    451.52/676.32 = 305.36/x
  3. Step 3: Cross multiply
    451.52x = 676.32 × 305.36
  4. Step 4: Simplify right side
    451.52x = 206,521.08
  5. Step 5: Solve for x
    x = 206,521.08/451.52
  6. Step 6: Final answer
    x = 457.39

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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.