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Finding the Fourth Proportional to 246.65, 340.20 and 172.98

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Solution

The fourth proportional to 246.65, 340.20 and 172.98 is: 238.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.65 : 340.20 = 172.98 : x
  2. Step 2: Convert to fraction form
    246.65/340.20 = 172.98/x
  3. Step 3: Cross multiply
    246.65x = 340.20 × 172.98
  4. Step 4: Simplify right side
    246.65x = 58,847.80
  5. Step 5: Solve for x
    x = 58,847.80/246.65
  6. Step 6: Final answer
    x = 238.59

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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.