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Finding the Fourth Proportional to 451.32, 676.08 and 424.68

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Solution

The fourth proportional to 451.32, 676.08 and 424.68 is: 636.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.32 : 676.08 = 424.68 : x
  2. Step 2: Convert to fraction form
    451.32/676.08 = 424.68/x
  3. Step 3: Cross multiply
    451.32x = 676.08 × 424.68
  4. Step 4: Simplify right side
    451.32x = 287,117.65
  5. Step 5: Solve for x
    x = 287,117.65/451.32
  6. Step 6: Final answer
    x = 636.17

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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.