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Finding the Fourth Proportional to 611.72, 916.92 and 246.32

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Solution

The fourth proportional to 611.72, 916.92 and 246.32 is: 369.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.72 : 916.92 = 246.32 : x
  2. Step 2: Convert to fraction form
    611.72/916.92 = 246.32/x
  3. Step 3: Cross multiply
    611.72x = 916.92 × 246.32
  4. Step 4: Simplify right side
    611.72x = 225,855.73
  5. Step 5: Solve for x
    x = 225,855.73/611.72
  6. Step 6: Final answer
    x = 369.21

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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.