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Finding the Fourth Proportional to 246.66, 340.25 and 154.50

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Solution

The fourth proportional to 246.66, 340.25 and 154.50 is: 213.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.66 : 340.25 = 154.50 : x
  2. Step 2: Convert to fraction form
    246.66/340.25 = 154.50/x
  3. Step 3: Cross multiply
    246.66x = 340.25 × 154.50
  4. Step 4: Simplify right side
    246.66x = 52,568.63
  5. Step 5: Solve for x
    x = 52,568.63/246.66
  6. Step 6: Final answer
    x = 213.12

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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.