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Finding the Fourth Proportional to 676.41, 1,014.63 and 265.92

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Solution

The fourth proportional to 676.41, 1,014.63 and 265.92 is: 398.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.41 : 1,014.63 = 265.92 : x
  2. Step 2: Convert to fraction form
    676.41/1,014.63 = 265.92/x
  3. Step 3: Cross multiply
    676.41x = 1,014.63 × 265.92
  4. Step 4: Simplify right side
    676.41x = 269,810.41
  5. Step 5: Solve for x
    x = 269,810.41/676.41
  6. Step 6: Final answer
    x = 398.89

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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.