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Finding the Fourth Proportional to 837.38, 1,255.35 and 404.84

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Solution

The fourth proportional to 837.38, 1,255.35 and 404.84 is: 606.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.38 : 1,255.35 = 404.84 : x
  2. Step 2: Convert to fraction form
    837.38/1,255.35 = 404.84/x
  3. Step 3: Cross multiply
    837.38x = 1,255.35 × 404.84
  4. Step 4: Simplify right side
    837.38x = 508,215.89
  5. Step 5: Solve for x
    x = 508,215.89/837.38
  6. Step 6: Final answer
    x = 606.91

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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.