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Finding the Fourth Proportional to 246.67, 340.38 and 153.40

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Solution

The fourth proportional to 246.67, 340.38 and 153.40 is: 211.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.67 : 340.38 = 153.40 : x
  2. Step 2: Convert to fraction form
    246.67/340.38 = 153.40/x
  3. Step 3: Cross multiply
    246.67x = 340.38 × 153.40
  4. Step 4: Simplify right side
    246.67x = 52,214.29
  5. Step 5: Solve for x
    x = 52,214.29/246.67
  6. Step 6: Final answer
    x = 211.68

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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.