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Finding the Fourth Proportional to 606.12, 837.36 and 489.48

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Solution

The fourth proportional to 606.12, 837.36 and 489.48 is: 676.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.12 : 837.36 = 489.48 : x
  2. Step 2: Convert to fraction form
    606.12/837.36 = 489.48/x
  3. Step 3: Cross multiply
    606.12x = 837.36 × 489.48
  4. Step 4: Simplify right side
    606.12x = 409,870.97
  5. Step 5: Solve for x
    x = 409,870.97/606.12
  6. Step 6: Final answer
    x = 676.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.