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Finding the Fourth Proportional to 611.98, 917.25 and 246.28

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Solution

The fourth proportional to 611.98, 917.25 and 246.28 is: 369.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.98 : 917.25 = 246.28 : x
  2. Step 2: Convert to fraction form
    611.98/917.25 = 246.28/x
  3. Step 3: Cross multiply
    611.98x = 917.25 × 246.28
  4. Step 4: Simplify right side
    611.98x = 225,900.33
  5. Step 5: Solve for x
    x = 225,900.33/611.98
  6. Step 6: Final answer
    x = 369.13

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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.