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Finding the Fourth Proportional to 607.67, 837.36 and 397.61

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Solution

The fourth proportional to 607.67, 837.36 and 397.61 is: 547.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.67 : 837.36 = 397.61 : x
  2. Step 2: Convert to fraction form
    607.67/837.36 = 397.61/x
  3. Step 3: Cross multiply
    607.67x = 837.36 × 397.61
  4. Step 4: Simplify right side
    607.67x = 332,942.71
  5. Step 5: Solve for x
    x = 332,942.71/607.67
  6. Step 6: Final answer
    x = 547.90

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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.